2022–2023

Visit us at www.pge.com/greenbook

Copyright © 2022 by Pacific Gas and Electric Company. All rights reserved.

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. For information, address:

Pacific Gas and Electric Company Technical Document Management Mail Code N9H

P.O. Box 770000

San Francisco, CA 94177

Produced by Technical Document Management

Pacific Gas and Electric Company (PG&E) Electric and Gas Service Requirements (TD-7100M)

Architects and Engineers

Electrical Contractors

Plumbing Contractors

City and County Building Inspectors

Manufacturers of Electrical Equipment

Pacific Gas and Electric Company Employees

2022–2023 Edition

(Supersedes All Previous Editions and Revisions )

The Electric and Gas Service Requirements (i.e., Greenbook ) is a guide to Pacific Gas and Electric Company (PG&E) requirements and policies for establishing electric and gas service to new or remodeled applicant installations. The illustrations and explanations in this manual describe how to construct and install services and equipment. Alternate designs and installations that do not meet the requirements in this manual will not be approved.

In addition to the utility requirements, local or state officials may stipulate additional provisions for the installation of equipment and materials that are in their authorized areas of responsibility and jurisdiction.

Should you have any questions regarding this manual, please call your local PG&E representative (see Table FM-1, “Service Planning Office and Inspection Desk Contact Information,” starting on Page iv.).

Applicant gas and electric service and meter installation arrangements are subject to PG&E’s review and approval.

Applicants should contact their local PG&E representatives as soon in the planning process as possible.

N OTE : The acronym PG&E is used throughout this manual to designate Pacific Gas and Electric Company.

i 2022 – 2023

Greenbook Preface

The PG&E Electric and Gas Service Requirements (i.e., Greenbook ) is updated and published regularly. The 2022–2023 Greenbook supersedes all previous editions and revisions and the requirements, here in, are effective until a new revision is released the following year.

N otice: This Manual Is Subject to Change

Information and requirements in this manual are subject to change over time.

PG&E may revise its design and construction documents relating to applicant service requirements between updates to this manual. Except when required by law, PG&E applies only those construction and design specifications, standards, terms, and conditions that apply to a new extension of service project for the 18 months following the date the application for a new extension of service project is approved. The Approval Date of a new extension of service application refers to the earlier of either the effective date of the contract for the extension of gas and/or electric service or the date that PG&E first invoices the customer for the extension of gas and/or electric service. These requirements apply as long as applicants complete the approved projects within 18 months. If the applicant has not started construction within 18 months of PG&E’s initial approval, PG&E may review the design and, if warranted, refresh the cost estimate. If the applicant does not fulfill obligations under the extension agreement, PG&E may, at its discretion, cancel the agreement (see Provisions Form 62-0982, Section 20). PG&E can then request another review of the design before approving construction activities.

The online versions of the Electric & Gas Service Requirements, located at www.pge.com/greenbook, are updated as quickly as possible when changes occur. The bound manual is not reprinted until the next scheduled print date regardless of changes in processes or requirements. Therefore, it is imperative that applicants for all gas and electric service projects consult the online version of this manual ( www.pge.com/greenbook ) before finalizing project plans.

2022 – 2023 ii

Greenbook Preface

Information,” starting on Page iv.

iii 2022 – 2023

Greenbook Preface

Table FM-1 Service Planning Office and Inspection Desk Contact Information

2022 – 2023 iv

Greenbook Preface

Table FM-1 Service Planning Office and Inspection Desk Contact Information (continued)

v 2022 – 2023

Greenbook Preface

Table FM-1 Service Planning Office and Inspection Desk Contact Information (continued)

2022 – 2023 vi

Greenbook Preface

Table FM-2 Service Planning Office and Inspection Desk Contact Information (continued)

vii 2022 – 2023

Greenbook Preface

Table FM-1 Service Planning Office and Inspection Desk Contact Information (continued)

2022 – 2023 viii

Greenbook Preface

Customer Quick Reference Notes

ix 2022 – 2023

Greenbook Preface

Customer Quick Reference Notes, continued

2022 – 2023 x

Table of Contents

Contents Page

Section 1 – General

1.1. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1.2. Permits and Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.2.1 Pre-Construction Meetings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.3. Applying for Building and Renovation Services . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.4. Changes in Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

1.5. Additional Nonresidential (Commercial and Industrial) Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.6. Design and Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.6.1. PG&E’s Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.6.2. Applicant’s Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

1.6.3. Providing Access to PG&E Electric Facilities . . . . . . . . . . . . . . . . . . 1-8

1.6.4. Installing Transformers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1.6.5. Underground Electric Service Extensions . . . . . . . . . . . . . . . . . . . . 1-10

1.7. Connecting and Sealing Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

1.8. Access to an Applicant’s Residence, Building, or Property . . . . . . . . . . . . . . 1-11

1.9. Overhead Electric Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1.10. Underground Electric Lines and Gas Pipelines . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1.10.1. Safe Landscaping Near Underground Facilities . . . . . . . . . . . . . . . . 1-13

1.11. PG&E Safety Training Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

1.12. SmartMeter� Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1.13. PG&E Online (Website) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1.13.1. Electric and Gas Service Requirements Manual (aka Greenbook) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1.13.2. Rates and Tariffs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

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Section 1 – General (continued)

1.14. Determining the Electric Service Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

1.15. Changing an Applicant’s Approved Project or Existing Service Loads . . . . . 1-20

1.16. Upgrading, Replacing, and Relocating Electric Facilities, or Adding Power Generation Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

1.16.1. Upgrading Electric Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

1.16.2. Replacing Electric Facilities with Like-for-Like . . . . . . . . . . . . . . . 1-21

1.16.3. Relocating Electric Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

1.16.4. Adding Power Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

1.17. Standard Electric Service Voltage and Load Limitations . . . . . . . . . . . . . . . . 1-24

1.17.1. Single-Phase Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

1.17.2. Three-Phase Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

1.17.3. Mixed-Use Projects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

1.18. Wholesale Distribution Tariff (WDT) Interconnections . . . . . . . . . . . . . . . . . 1-25

1.19. Harmful Wave Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

Section 2 – Gas Service

2.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2. Procedures for Establishing Gas Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2.1. Establishing New Gas Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2.2. Relocating or Adding Load to an Existing Service . . . . . . . . . . . . . . 2-4

2.3. Gas Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.3.1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.3.2. Branch Service Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.3.3. Curb Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

2.3.4. Joint Utility Service Trenches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

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Section 2 – Gas Service (continued)

2.3.5. Multiple Buildings Located on One Lot . . . . . . . . . . . . . . . . . . . . . . 2-15

2.3.6. Mobile Home Parks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2.4. Set Requirements for Gas Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2.4.1. Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

2.4.2. Gas Meter-Set Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

2.5. Applicant-Owned and Installed Gas Service Piping (e.g., Houseline), Valves, and Automatic Shut-Off Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49

2.5.1. Service Delivery Point for the Gas Supply . . . . . . . . . . . . . . . . . . . . 2-50

2.5.2. Applicant-Owned Riser and Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

2.5.3. Electrically Bonding and Grounding Gas Pipe . . . . . . . . . . . . . . . . . 2-53

2.5.4. Applicant-Owned Protective Equipment . . . . . . . . . . . . . . . . . . . . . 2-53

Section 3 – Electric Service: Underground

3.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2.1. Safety Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2.2. Establishing Underground Electric Service Responsibilities . . . . . . . 3-2

3.2.3. Installing Ground Rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.2.4. Installing Equipment Pads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.2.5. Installing Overhead and Underground Service for Two or More Buildings on One Lot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.2.6. Inspecting and Approving Overhead and Underground Services . . . 3-7

3.2.7. Easements for PG&E Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.2.8. Clearances Around PG&E Facilities . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

xiii 2022 – 2023

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Section 3 – Electric Service: Underground (continued)

3.3. Underground Service Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3.3.1. Installing Services from Underground Distribution Systems . . . . . . . 3-8

3.3.2. Installing Services from Overhead Distribution Systems . . . . . . . . . . 3-9

3.3.3. Installing Conduit for Underground Service . . . . . . . . . . . . . . . . . . 3-11

3.3.4. Installing PG&E-Only Service Trenches . . . . . . . . . . . . . . . . . . . . . 3-13

3.3.5. Installing Offsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

3.3.6. Selecting Backfill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

3.3.7. Providing Drainage from the Conduit System . . . . . . . . . . . . . . . . . 3-16

3.3.8. Installing Joint Utility Service Trenches . . . . . . . . . . . . . . . . . . . . . 3-17

3.3.9. Providing a Service-Termination Facility . . . . . . . . . . . . . . . . . . . . . 3-19

3.3.10. Bioswales and Large, Wet Locations . . . . . . . . . . . . . . . . . . . . . . . . 3-20

3.3.11. Replacing Non-Standard Underground Services . . . . . . . . . . . . . . . 3-20

3.4. Electric Underground Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

3.5. Mandrels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Section 4 – Electric Service: Overhead

4.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.2.1. Safety Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.3. Locating Overhead Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.3.1. Point of Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.3.2. Two or More Buildings on One Lot . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

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Section 4 – Electric Service: Overhead (continued)

4.4. Service Drop Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4.4.1. Vertical Clearance for Residential, Overhead Service . . . . . . . . . . . . 4-4

4.4.2. Clearance Above Buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4.4.3. Clearance at the Residential Point of Attachment . . . . . . . . . . . . . . . 4-8

4.4.4. Vertical Clearance on Nonresidential Property . . . . . . . . . . . . . . . . . 4-10

4.4.5. Clearances for a Nonresidential Building Service Drop Using Cable or Equally Insulated, Open-Wire Service Conductors . . . . . . 4-11

4.4.6. Clearances Around Doors and Windows . . . . . . . . . . . . . . . . . . . . . 4-14

4.4.7. Clearance Between Service Drop Wires . . . . . . . . . . . . . . . . . . . . . . 4-14

4.4.8. Clearance from Applicant-Owned Service Poles . . . . . . . . . . . . . . . 4-15

4.5. Service Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

4.5.1. Attaching Low-Voltage, Residential, Overhead Service Drops . . . . 4-15

4.5.2. Attaching Low-Voltage, Nonresidential, Overhead Service Drops . 4-17

4.5.3. Special Service Attachment Requirements: Areas Subject to Heavy Snow Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

4.6. Attachment Structures (Periscopes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21

4.6.1. Periscope Clearances and Bracing Requirements . . . . . . . . . . . . . . . 4-22

4.7. Service Weatherheads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

4.8. Service-Entrance Conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

4.9. Applicant-Owned, Installed, or Furnished Wood Poles . . . . . . . . . . . . . . . . . 4-25

4.10. Required Vegetation Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27

4.10.1. General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27

4.10.2. Planning Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29

4.10.3. Existing Overhead Lines Adjacent to Developments . . . . . . . . . . . . 4-30

xv 2022 – 2023

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Section 4 – Electric Service: Overhead (continued)

4.10.4. Line Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

4.10.5. Primary Overhead Distribution Poles in Commercial Orchard Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

4.10.6. Removing Vegetation Near Existing, High-Voltage, Energized Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

Section 5 – Electric Metering: General

5.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2. General Conditions and Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2.1. Approved Metering and Service-Termination Equipment . . . . . . . . . 5-1

5.2.2. Drawing Submittal Requirements for Metering and Service Termination Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2.3. Applicant Responsibilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5.2.4. Requirements for Installing Secondary Terminations (0−600 Volts) in Metering Equipment Requiring CTs . . . . . . . . . . . . 5-5

5.3. Electric Meters: General Location Requirements . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.3.1. Basic Meter Location Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

5.3.2. Prohibited Meter and Service Equipment Locations . . . . . . . . . . . . . 5-7

5.3.3. Locating and Grouping Multiple Meters . . . . . . . . . . . . . . . . . . . . . . 5-8

5.3.4. Electric Meter and Service Termination Equipment Rooms . . . . . . . 5-8

5.4. Meter Heights, Clearances, Enclosures, and Protection . . . . . . . . . . . . . . . . . 5-13

5.4.1. Meter Heights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

5.4.2. Meter Cabinet Enclosure Clearances . . . . . . . . . . . . . . . . . . . . . . . . 5-14

5.4.3. Meter Set Clearance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

5.4.4. Working Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

5.4.5. Barricades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

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Section 5 – Electric Metering: General (continued)

5.4.6. Meter Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

5.5. Meter Identification and Seals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

5.5.1. Properly Identifying and Marking Meters . . . . . . . . . . . . . . . . . . . . 5-24

5.5.2. Sealing Meters and Metering Equipment . . . . . . . . . . . . . . . . . . . . . 5-26

5.5.3. Locking Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

5.6. Meter Types and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

5.6.1. Using a Meter Socket Adapter for Overhead-to-Underground Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29

5.6.2. Installing Non-Allowed and Unauthorized Customer Equipment . . 5-29

5.6.3. Fire-Pump Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29

5.7. Main Service Disconnects and Switching Sequences . . . . . . . . . . . . . . . . . . . 5-31

5.7.1. Main Service Disconnects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

5.7.2. Main Service Disconnect Switch Rated for Amperes Interrupting Capacity (AIC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

5.7.3. Arc Flash Assessment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

5.7.4. Electronic Trip Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

5.7.5. Meter and Main Service Switch Sequence . . . . . . . . . . . . . . . . . . . . 5-33

5.8. Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35

5.9. Temporary Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38

5.9.1. Temporary Service Using Permanent Service Panels . . . . . . . . . . . . 5-38

5.9.2. Temporary-Service Metering Pedestal . . . . . . . . . . . . . . . . . . . . . . . 5-39

5.9.3. Temporary Plug-In Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41

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Section 5 – Electric Metering: General (continued)

5.10. Connecting Non-Utility Power Sources to Utility Services . . . . . . . . . . . . . . 5-42

5.10.1. Specific Interconnection Requirements for Services Up to 600 Volts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42

5.10.2. Warning Statements and Labels for Interconnected Services . . . . . . 5-47

5.10.3. Violation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-48

5.10.4. References for Customer Generation . . . . . . . . . . . . . . . . . . . . . . . . 5-48

5.11. Plug-In Electric Vehicle Interconnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-48

Section 6 – Electric Metering: Residential

6.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2. Residential Electric Service: Specifications and Requirements . . . . . . . . . . . . 6-1

6.2.1. Service Classes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2.2. Test-Bypass Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2.3. Electric Meter Socket Covers and Seals . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.3. Meter Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.3.1. Installing Utility Services to Mobile Homes . . . . . . . . . . . . . . . . . . . 6-3

6.4. Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.4.1. Single Meter: Underground Service . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.4.2. Single Meter: Overhead Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

6.4.3. Single Meter: Combination Overhead and Underground Service Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

6.4.4. Multiple Meters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

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Section 7 Electric Metering: Nonresidential, Industrial, and Agricultural

7.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2. Service Specifications and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2.1. Permitted Types of Electric Service . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2.2. Required Test-Bypass Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2.3. Required Approvals for Meter Equipment Without Test-Bypass Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.2.4. Meter Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2

7.2.5. Services, 0 Amps Through 200 Amps, Single Applicant, Overhead and Underground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3

7.2.6. Services, Over 200 Amps, Single Applicant, Underground . . . . . . . . 7-5

7.2.7. Services, Over 200 Amps, Single Applicant, Overhead . . . . . . . . . . 7-12

7.2.8. Multi-Applicant Meter Installations . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

Section 8 – Electric Metering: Pedestals

8.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.2. Residential Electric Metering Pedestals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.3. Nonresidential Single-Meter Service Pedestals, 100–200 Amps . . . . . . . . . . . 8-2

8.4. Nonresidential Dual-Meter Service Pedestals, 100–400 Amps . . . . . . . . . . . . . 8-6

8.5. Nonresidential Current-Transformer Rated Pedestals, 400 – 600 Amps 1Ø or 3Ø, 800 Amps 3Ø . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11

Section 9 Electric Metering: Components and Cable Terminating

9.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.2. Test Blocks for Self-Contained Metering, 0 Amps Through 225 Amps . . . . . . 9-1

9.3. Test Switch Mounting Base Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

9.4. Separate CT Cabinet, 201 Amps and Above, Single Phase and Three Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

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Section 9 Electric Metering: Components and Cable Terminating (continued)

9.5. CT Mounting Base, 201 Amps Through 400 Amps . . . . . . . . . . . . . . . . . . . . . 9-5

9.6. Alternate CT Mounting Base, One Phase or Three Phase . . . . . . . . . . . . . . . . . 9-6

9.7. Bused CT Cabinet, 3-Wire Service, 201 Amps Through 600 Amps . . . . . . . . . 9-8

9.8. Bused CT Cabinet, 4-Wire Service, 400 Amps . . . . . . . . . . . . . . . . . . . . . . . . . 9-9

9.9. Meter Box for Transformer-Rated Metering . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

9.10. Underground Service Cable-Termination Compartments or Sections . . . . . . 9-12

9.11. Approved Service-Terminal Conductor Connectors . . . . . . . . . . . . . . . . . . . . 9-17

Section 10 Electric Switchboards: 0 Volts Through 600 Volts

10.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

10.2. General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

10.3. Switchboard Service Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3

10.3.1. Standard Switchboard Service Section . . . . . . . . . . . . . . . . . . . . . . . 10-3

10.3.2. Specifically Engineered Switchboard Service Sections . . . . . . . . . . 10-3

10.3.3. Requirements for All Switchboard Service Sections . . . . . . . . . . . . 10-4

10.3.4. Standard Switchboard CT Compartment, 0 Amps Through 1,200 Amps, Single-Phase or Three-Phase, 3-Wire Service . . . . . . 10-7

10.3.5. Standard Switchboard CT Compartment, 0 Amps Through 1,200 Amps, Three-Phase, 3-Wire and 4-Wire Services . . . . . . . . . 10-9

10.3.6. Standard Switchboard CT Compartment, 1,001 Amps Through 3,000 Amps, Single-Phase or Three-Phase, 3-Wire Service . . . . . 10-11

10.3.7. Standard Switchboard, CT Compartment, 1,001 Amps Through 3,000 Amps, Three-Phase, 4-Wire Service . . . . . . . . . . . . . . . . . . 10-13

10.3.8. Standard Switchboard CT Compartment, 3,001 Amps and Larger, Three-Phase, 3-Wire Service . . . . . . . . . . . . . . . . . . . . 10-15

10.3.9. Standard Switchboard CT Compartment, 3,001 Amps and Larger, Three-Phase, 3-Wire or 4-Wire Service . . . . . . . . . . . 10-17

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Section 10 Electric Switchboards: 0 Volts Through 600 Volts (continued)

10.3.10. Removable Link Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-19

10.3.11. Standard Section for Self-Contained Meter Sockets, 0 Amps Through 225 Amps, Installed in Switchboards: Nonresidential . . . 10-24

10.3.12. Service Terminations for Underground Services . . . . . . . . . . . . . . 10-26

10.3.13. Underground, Service-Termination Pull Section (Located Below Ground Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-28

10.3.14. Underground, Cable-Terminating Facilities in Pull Boxes or Pull Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-34

10.4. Meter and Switch Sequence Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . 10-37

10.5. Metering Transformer Compartments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-38

10.6. Meter Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-38

10.7. Transformer-Rated and Self-Contained Switchboards . . . . . . . . . . . . . . . . . 10-44

10.8. Adding New Metering Equipment to Existing Switchboards . . . . . . . . . . . . 10-45

Section 11 Electric Switchboards: 601 Volts Through 25,000 Volts, and Primary Services

11.1. Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

11.2. General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

11.3. Specific Requirements for High-Voltage Switchboards . . . . . . . . . . . . . . . . . 11-2

11.4. Interconnection Requirements and Primary Services . . . . . . . . . . . . . . . . . . 11-14

11.5. Primary Switchgear Located Below Ground Level . . . . . . . . . . . . . . . . . . . . 11-15

Appendix A Acronyms and Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Appendix B Electric and Gas Service Documents . . . . . . . . . . . . . . . . . . . . . . . . B-1

Appendix C Electric and Gas Engineering Documents . . . . . . . . . . . . . . . . . . . . C−1

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List of Tables

Contents Page

Section 1 General

Table 1-1 USA Color Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Table 1-2 Minimum Safe Working Distances (Scaffolds, Equipment, Tools, Structures, and People) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

Table 1-3 Minimum Safe Working Distances (Boom-Type Lifting or Hoisting Equipment) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13

Section 2 Gas Service

Table 2-1 Minimum Separation and Clearance Requirements for Trenches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

Table 2-2 Dimensions to Figure 2-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-41

Section 3 Electric Service: Underground

Table 3-1 Minimum Separation and Clearance Requirements for Trenches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Table 3-2 Mandrel Dimensions, Part Numbers, and Order Codes . . . . . . . . . . . 3-23

Table 3-3 Businesses That Sell or Rent Mandrels . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Section 4 Electric Service: Overhead

Table 4-1 Minimum Clearances Over Swimming Pools . . . . . . . . . . . . . . . . . . . . 4-6

Table 4-2 Minimum Allowable Clearance of Insulated Service

Drops from Buildings–0 Volts Through 750 Volts . . . . . . . . . . . . . . . . 4-7

Table 4-3 Vertical Clearance from the Ground on Nonresidential

Property . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Table 4-4 Maximum Distance “L” (Inches from the Service Attachment to the Top Periscope Support) . . . . . . . . . . . . . . . . . . . . . 4-20

Table 4-5 Maximum Mast Height Above the Roof Without Bracing . . . . . . . . . 4-23

i 2022 – 2023

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Contents Page

Section 5 Electric Metering: General

Table 5-1 Meter Cabinet Enclosure Clearance Dimensions . . . . . . . . . . . . . . . . 5-15

Table 5-2 Working Space Dimensional Requirements . . . . . . . . . . . . . . . . . . . . 5-18

Table 5-3 Bollard Post Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

Table 5-4 Meter Socket Requirements (Number of Jaws) . . . . . . . . . . . . . . . . . . 5-27

Table 5-5 Grounding Requirements for Wall-Mounted Panels . . . . . . . . . . . . . . 5-38

Table 5-6 Requirements for AC Disconnect Switches . . . . . . . . . . . . . . . . . . . . . 5-43

Table 5-7 Customer Generation References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-48

Section 6 Electric Metering: Residential

Table 6-1 Residential (0 Amps−225 Amps) Enclosure . . . . . . . . . . . . . . . . . . . . 6-5

Table 6-2 Residential Combination (OH/UG) Meter Panel . . . . . . . . . . . . . . . . . 6-13

Table 6-3 Dimension Specifications for Multimeter Installations . . . . . . . . . . . . 6-19

Section 8 Electric Metering: Pedestals

Table 8-1 Minimum Dimensions (Inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

Table 8-2 Minimum Dimensions (Inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

Table 8-3 CT Pedestal Approved Manufacturer’s Model Numbers and Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12

Section 9 Electric Metering: Components and Cable Terminating Facilities

Table 9-1 CT Cabinet Minimum Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Table 9-2 Hinged Meter Panel Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11

Table 9-3 Minimum Wall-Mounted Pull-Section Dimensions: Residential

and Nonresidential, Single-Phase or Three-Phase . . . . . . . . . . . . . . . . 9-13

Table 9-4 Minimum Pad-Mounted (Floor-Standing) Switchboard Pull-Section Dimensions: Residential and Nonresidential, Single-Phase and Three-Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13

Table 9-5 Approved, Compression-Type, Service-Terminal Connectors . . . . . . 9-18

2022 – 2023 ii

List of Tables

Contents Page

Section 10 Electric Switchboards: 0 Volts Through 600 Volts

Table 10-1 Minimum Bottom-Fed Pull-Section Dimensions . . . . . . . . . . . . . . . 10-27

Table 10-2 Pull-Section Dimensions (Minimums) Below Ground Level . . . . . . 10-31

Table 10-3 Dual-Socket, Hinged, Meter-Panel Requirement . . . . . . . . . . . . . . . 10-39

Table 10-4 Adding Up Meter Section Ampacities . . . . . . . . . . . . . . . . . . . . . . . . 10-46

Section 11 Electric Switchboards: 601 Volts Through 25,000 Volts, and Primary Services

Table 11-1 Bill of Materials for Concrete Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7

Table 11-2 Dimensions for High-Voltage Meter Enclosures . . . . . . . . . . . . . . . . 11-11

Appendix A Acronyms and Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Appendix B Electric and Gas Service Documents . . . . . . . . . . . . . . . . . . . . . . B-1

Table B-1 Plant Matrix for Stockton, Yosemite, Fresno, and Kern

Divisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6

Table B-2 Plant Matrix for San Francisco, Peninsula, and DeAnza

Divisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-7

Table B-3 Plant Matrix for San Jose, Central Coast, and Los Padres

Divisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8

Table B-4 Plant Matrix for North Valley, Sierra, and Sacramento Divisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-9

Table B-5 Plant Matrix for Diablo, Mission, and East Bay Divisions . . . . . 11-10

Table B-6 Plant Matrix for North Coast and North Bay Divisions . . . . . . . 11-11

Table B-7 Do Not Plant These Trees Under or Within 15 Feet of

Overhead Power Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12

Appendix C Electric and Gas Engineering Documents . . . . . . . . . . . . . . . . . C-1

Table C-1 Gas Design Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

Table C-2 Electric Engineering Documents . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2

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2022 – 2023 iv

List of Figures

Contents Page

Section 1 – General

Figure 1-1 Nameplate Rating Label Example: Pad-Mounted Electrical Switchboard or Termination Enclosure . . . . . . . . . . . . . . . . 1-19

Figure 1-2 Nameplate Rating Label Example: Wall-Mounted Electrical Meter Panel or Termination Enclosure . . . . . . . . . . . . . . . . 1-19

Figure 1-3 Electric Panel Replacement Not Allowed When Over a PG&E SmartMeter Gas Meter Set . . . . . . . . . . . . . . . . 1-23

Section 2 – Gas Service

Figure 2-1 Typical Gas Service Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Figure 2-2 Gas-Only Service Trench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Figure 2-3 Typical Gas Bell Hole−Plan View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Figure 2-4 Typical Bell Hole Depth−Profile View . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Figure 2-5 Typical Joint-Service Trench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Figure 2-6 Separate Gas Services for Two Buildings on a Single Lot . . . . . . . . . 2-15

Figure 2-7 Separate Gas Services for Two Buildings on a Corner Lot . . . . . . . . . 2-16

Figure 2-8 Apartments With Grouped Meter Locations . . . . . . . . . . . . . . . . . . . . 2-17

Figure 2-9 Individually Metered Buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Figure 2-10 Property Line Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

Figure 2-11 Acceptable Locations for Gas Meter Installations . . . . . . . . . . . . . . . . 2-23

Figure 2-12 Acceptable Meter Locations for Mobile Home Parks . . . . . . . . . . . . . 2-24

Figure 2-13 Flex-Hose Meter Set–Residential and Small Commercial . . . . . . . . . 2-25

Figure 2-14 Typical Residential Gas Meter Connection . . . . . . . . . . . . . . . . . . . . . 2-28

Figure 2-15 Typical Gas Meter Connection for 400 to 1,000 Class Meters . . . . . . 2-29

Figure 2-16 Gas Meter Connection Using a 1.5M or 3M Rotary Gas Meter . . . . . 2-30

Figure 2-17 Gas Meter Connection Using a 5M or 7M Rotary Gas Meter . . . . . . . 2-31

Figure 2-18 Gas Meter Connection Using an 11M or 16M Rotary Gas Meter . . . . 2-32

Figure 2-19 Electric and Gas Meter Set Separation Dimensions and Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

i 2022 – 2023

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Contents Page

Section 2 – Gas Service (continued)

Figure 2-20 Gas Meter Set Clearance From Building Openings . . . . . . . . . . . . . . . 2-35

Figure 2-21 Gas Regulator Set Clearance Requirement from Air-Intake and Exhaust Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

Figure 2-22 Clearance Requirements for an Existing Electric Meter/Panel . . . . . . 2-38

Figure 2-23 Dimensions for Typical, Residential, Multimeter Installations . . . . . . 2-40

Figure 2-24 Typical Detached Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42

Figure 2-25 Typical Enclosure Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42

Figure 2-26 Recessed, Individual Meter Cabinet for Gas and Electric Meter Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44

Figure 2-27 Cabinet Dimensions for Multiple, Residential Gas Meters . . . . . . . . . 2-45

Figure 2-28 Typical Residential Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

Figure 2-29 Recommended, Applicant-Owned Houseline Riser and Pipe . . . . . . . 2-52

Section 3 – Electric Service: Underground

Figure 3-1 Locations of Underground Electric Service-Termination and Meter Facilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Figure 3-2 Service Conduit Layout–Top View . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Figure 3-3 PG&E Trench and Equipment in PUE − Example . . . . . . . . . . . . . . . . 3-8

Figure 3-4 Underground-to-Underground Service Connection . . . . . . . . . . . . . . . . 3-9

Figure 3-5 Overhead-to-Underground Service Connection . . . . . . . . . . . . . . . . . 3-10

Figure 3-6 Typical Joint Service Trench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Figure 3-7 PG&E Electric and Gas Service Trench . . . . . . . . . . . . . . . . . . . . . . . 3-18

Figure 3-8 Flexible Steel Mandrel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Section 4 – Electric Service: Overhead

Figure 4-1 Preferred and Alternate Locations for the Overhead Service Drop Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Figure 4-2 Ground Clearances for Supply Service Drops, 0 Volts Through 750 Volts, Residential Installations (Required by the CPUC) . . . . . . . . 4-4

2022 – 2023 ii

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Contents Page

Section 4 – Electric Service: Overhead, continued

Figure 4-3 Minimum Clearance for All Drops Above or Adjacent To Swimming Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Figure 4-4 Nonmetallic Roof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Figure 4-5 Clearance at the Residential Point of Attachment . . . . . . . . . . . . . . . . . 4-9

Figure 4-6 Clearance at the Residential Point of Attachment . . . . . . . . . . . . . . . . . 4-9

Figure 4-7 Clearance at the Residential Point of Attachment . . . . . . . . . . . . . . . . . 4-9

Figure 4-8 Clearance at the Residential Point of Attachment . . . . . . . . . . . . . . . . . 4-9

Figure 4-9 Clearance at the Residential Point of Attachment . . . . . . . . . . . . . . . . . 4-9

Figure 4-10 Clearance at the Residential Point of Attachment . . . . . . . . . . . . . . . . . 4-9

Figure 4-11 Clearance at the Residential Point of Attachment . . . . . . . . . . . . . . . . . 4-9

Figure 4-12 Ground Clearances for Supply Service Drops, 0 Volts Through 750 Volts, Industrial and Nonresidential Installations (Required by the CPUC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Figure 4-13 Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-14 Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-15 Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-16 Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-17 Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-18 Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-19 Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-20 Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

Figure 4-21 Clearance Around Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Figure 4-22 Clearance Around Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

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Contents Page

Section 4 – Electric Service: Overhead (continued)

Figure 4-23 Service Attachment Structure or Service Pole Secured to a Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15

Figure 4-24 Service Pole Detached from a Building . . . . . . . . . . . . . . . . . . . . . . . . 4-15

Figure 4-25 Open Wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Figure 4-26 Open Wire or Cable (Open Wire Shown) . . . . . . . . . . . . . . . . . . . . . . 4-16

Figure 4-27 Open Wire or Cable (Open Wire Shown) . . . . . . . . . . . . . . . . . . . . . . 4-16

Figure 4-28 Cable (Using Triplex) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Figure 4-29 Cable (Single Spool) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Figure 4-30 Open Wire or Cable (Cable Shown) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Figure 4-31 Service Drop Cable, 4/0 and Smaller, Triplex or Quadruplex . . . . . . 4-18

Figure 4-32 New Wall, 1/0 kcmil 1 to 397.5 kcmil Aluminum . . . . . . . . . . . . . . . 4-18

Figure 4-33 New or Existing Wall, 1/0 kcmil to 397.5 kcmil Aluminum . . . . . . . . 4-18

Figure 4-34 Open Wire Service, #4 to 397.5 kcmil Aluminum . . . . . . . . . . . . . . . 4-18

Figure 4-35 Service Drop Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Figure 4-36 Building Attachment–Service Knob . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20

Figure 4-37 Self-Supported Periscope Attachment Structure . . . . . . . . . . . . . . . . . 4-20

Figure 4-38 Braced Periscope Attachment Structure . . . . . . . . . . . . . . . . . . . . . . . 4-20

Figure 4-39 Unbraced Periscope Structure (Residential and Nonresidential) . . . . . 4-23

Figure 4-40 Illustration of a 15-Foot Clearance, Low-Growth Zone . . . . . . . . . . . 4-28

Figure 4-41 Grass and Shrubs Recommended Under Transmission Wires . . . . . . . 4-29

Figure 4-42 Alternative Routes to a House Showing High-Voltage Lines and Tree-Clearance Zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30

Figure 4-43 High-Voltage Marker on Poles and Crossarms . . . . . . . . . . . . . . . . . . 4-32

Section 5 – Electric Metering: General

Figure 5-1 Allowable Locations for Electric Service and Meter Rooms . . . . . . . 5-11

Figure 5-2 Meter Cabinet Enclosure Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Figure 5-3 Electric and Gas Meter Set Separation Dimensions and Clearances . . 5-16

2022 – 2023 iv

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Contents Page

Section 5 – Electric Metering: General, continued

Figure 5-4 Semi-Flush Meter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

Figure 5-5 Enclosed Meter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

Figure 5-6 Preferred Location of Conduits for Indoor and Outdoor Meter Panels and Switchboards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

Figure 5-7 Meter Panel Clearance and Protection from Residential Driveways or Parking Spaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

Figure 5-8 Nonresidential or Multifamily Metering and Service Equipment Clearance and Protection from Vehicle Areas . . . . . . . . . . . . . . . . . . . 5-23

Figure 5-9 Connection Diagrams for Self-Contained Meter Sockets . . . . . . . . . . 5-28

Figure 5-10 Connection Diagrams for Transformer-Rated Meter Sockets . . . . . . . 5-28

Figure 5-11 Fire-Pump Equipment Location and Service Connection Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

Figure 5-12 Circuit Breakers with Electronic Trip Unit . . . . . . . . . . . . . . . . . . . . . 5-33

Figure 5-13 Single Meter with Main Service Switch . . . . . . . . . . . . . . . . . . . . . . . 5-34

Figure 5-14 Single Meter with Multiple Service Switches . . . . . . . . . . . . . . . . . . . 5-34

Figure 5-15 Multimeter Installation Without Main Disconnect Switch . . . . . . . . . 5-34

Figure 5-16 Multimeter Installation with Main Disconnect Switch . . . . . . . . . . . . 5-34

Figure 5-17 Multiple Remote Switchboard or Meter-Panel Locations . . . . . . . . . . 5-35

Figure 5-18 Grounding Outside of the Sealed Section−Self-Contained Meter . . . . 5-37

Figure 5-19 Grounding Outside of the Sealed Section–Transformer Rated Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37

Figure 5-20 Temporary-Service Metering Pedestal . . . . . . . . . . . . . . . . . . . . . . . . . 5-40

Figure 5-21 Plug-In Temporary Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41

Figure 5-22 Typical Plug-In Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41

Figure 5-23 Transfer Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45

Figure 5-24 SLD Manual Transfer Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46

v 2022 – 2023

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Section 6 – Electric Metering: Residential

Figure 6-1 Typical Underground Service-Termination Enclosure, Combination Meter-Socket Panel (Residential, 0 Amps−225 Amps) . . . . . . . . . . . . . 6-5

Figure 6-2 Typical Service-Termination Enclosure, Combination Meter-Socket Panel for a Class 320 Meter (Residential, 120/240-Volt, 226-Amp Through 320-Amp Service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Figure 6-3 Underground Combination Meter and Current-Transformer Cabinet (201 Amps−400 Amps, 1∅ or 3∅) . . . . . . . . . . . . . . . . . . . . . 6-7

Figure 6-4 Typical Underground, Separate-Bused, Current-Transformer Cabinet and Safety-Socket Meter Box Assembly (201 Amps−400 Amps, 3∅ and 201 Amps−600 Amps, 1∅) . . . . . . . . 6-8

Figure 6-5 Combination Meter Socket Load Center . . . . . . . . . . . . . . . . . . . . . . . . 6-9

Figure 6-6 Typical Combination Meter and Service Termination Panel for a Class 320 Meter (Residential, 120/240-Volt, 226-Amp Through 320-Amp Service) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Figure 6-7 Overhead-Fed Combination Meter and Current-Transformer Cabinet (201 Amps−400 Amps, 1∅ or 3∅) . . . . . . . . . . . . . . . . . . . . 6-11

Figure 6-8 Overhead-Fed, Separate-Bused, Current-Transformer Cabinet and Meter Box (201 Amps−400 Amps, 1∅ or 3∅) . . . . . . . . . . . . . . . . . . 6-12

Figure 6-9 Overhead- or Underground-Fed Combination Meter and Service-Termination Panel (100 Amps−225 Amps, 1∅) . . . . . . . . . . 6-13

Figure 6-10 Overhead or Underground Service-Termination Meter Panel with Manual Bypass studs (320 Amps, 120/240-Volt, 1∅) . . . . . . . . . 6-14

Figure 6-11 Overhead Service, Grouped-Meter Installation Without a Main Switch (400 Amps Max, 1∅ or 3∅) . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

Figure 6-12 Underground Service, Grouped-Meter Installation Without a Main Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

Figure 6-13 Typical, Manufactured, Combination, Multimeter Installation: Seven Meters or More . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17

Figure 6-14 Clearances for a Typical, Manufactured, Combination, Multimeter Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

Figure 6-15 Horizontal Meter Trough Installation: Six Meters or Less . . . . . . . . . 6-20

Figure 6-16 Vertical Meter Trough Installation: Five Meters or Less . . . . . . . . . . . 6-20

2022 – 2023 vi

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Contents Page

Section 7 – Electric Metering: Nonresidential, Industrial, and Agricultural

Figure 7-1 Bused, Safety-Socket Meter Box for Self-Contained Metering (0 Amps−100 Amps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4

Figure 7-2 Bused, Safety-Socket Meter Box for Self-Contained Metering (101 Amps−200 Amps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5

Figure 7-3 Underground Combination Meter and Current-Transformer Cabinet (201 Amps−400 Amps, 1∅ or 3∅) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7

Figure 7-4 Separate-Bused Current-Transformer Cabinet and Meter Box with Underground Service-Termination Pull Box (201 Amps−400 Amps, 3∅ and 201 Amps−600 Amps, 1∅) . . . . . . . . 7-8

Figure 7-5 Underground Service Combination Meter and Current-Transformer Cabinet (600 Amps, 1Ø or 3Ø, 800 Amps 3Ø) . . . . . . . . . . . . . . . . . . 7-10

Figure 7-6 Switchboard Pull Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

Figure 7-7 Separate Pull Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

Figure 7-8 Bottom-Fed Service Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11

Figure 7-9 Overhead-Fed Combination Meter and Current-Transformer Cabinet, (201 Amps−400 Amps, 1∅ or 3∅) . . . . . . . . . . . . . . . . . . . . 7-13

Figure 7-10 Overhead-Fed, Separate-Bused, Current-Transformer Cabinet and Safety-Socket Meter Box (201 Amps−400 Amps, 1∅ or 3∅) . . . . . . 7-14

Figure 7-11 Overhead, Service-Termination, Standard Switchboard Service Section (0 Volts−600 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15

Figure 7-12 Overhead Service, Grouped-Meter Installation Without a Main Switch (Max. 400 Amps, 1∅ or 3∅) . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17

Figure 7-13 Underground Service, Grouped-Meter Installation Without a Main Switch (Max. 400 Amps, 3∅, or 600 Amps, 1∅) . . . . . . . . . . . . . . . . 7-17

Figure 7-14 Grouped-Meter Installation With a Main Switch (Max. 400 Amps, 3∅, 600 Amps, 1∅) . . . . . . . . . . . . . . . . . . . . . . . . 7-17

Section 8 – Electric Metering: Pedestals

Figure 8-1 Residential Electric Metering Pedestal . . . . . . . . . . . . . . . . . . . . . . . . . 8-2

Figure 8-2 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

Figure 8-3 Side View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

Figure 8-4 Service Cable Termination Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

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Section 8 – Electric Metering: Pedestals

Figure 8-5 Fixed Polycarbonate Viewing Window . . . . . . . . . . . . . . . . . . . . . . . . . 8-5

Figure 8-6 Service Cable Termination Section–Top View . . . . . . . . . . . . . . . . . . . 8-5

Figure 8-7 Directional Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6

Figure 8-8 Service Cable Termination Section–Top View . . . . . . . . . . . . . . . . . . . 8-7

Figure 8-9 Front Outside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7

Figure 8-10 Front Inside . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8

Figure 8-11 PG&E Service Cable Termination (Pull) Section . . . . . . . . . . . . . . . . . 8-8

Figure 8-12 Side View: Cover Removed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Figure 8-13 Front View−Interior Cover Removed . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9

Figure 8-14 Nonresidential CT Pedestal (400 – 600 Amps 1∅ or 3∅, 800 Amps 3∅) . . . . . . . . . . . . . . . . . . . 8-13

Figure 8-15 Nonresidential CT Pedestal – Side Mount Meter Panel (400–600 Amps, 1∅ or 3∅, 800 Amps 3∅) . . . . . . . . . . . . . . . . . . . . 8-14

Section 9 – Electric Metering: Components and Cable Terminating Facilities

Figure 9-1 Test Blocks for Self-Contained Metering, 0 Amps−225 Amps . . . . . . . 9-2

Figure 9-2 Removable Test Switch Mounting-Base Detail . . . . . . . . . . . . . . . . . . . 9-3

Figure 9-3 Cabinet Showing Stud-Mounted Cover . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Figure 9-4 Cabinet Showing Flanged Cover Fastened by Sealable Rivet Latches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Figure 9-5 Cabinet Showing Hinged Front Cover . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Figure 9-6 3-Wire, Single-Phase Service, Mounting Base . . . . . . . . . . . . . . . . . . . 9-5

Figure 9-7 4-Wire, Three-Phase Service, Mounting Base . . . . . . . . . . . . . . . . . . . . 9-5

Figure 9-8 CT Mounting Base (Single-Phase, 3-Wire, 400 Amps–600 Amps, 0 Volts−600 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

Figure 9-9 CT Mounting Base (Three Phase, 4-Wire, 400 Amps–800 Amps, 0 Volts–600 Volts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7

Figure 9-10 Bused CT Cabinet, 3-Wire Service, 400 Amps−600 Amps . . . . . . . . . 9-8

Figure 9-11 Bused CT Cabinet (4-Wire Service, 400 Amps Max) . . . . . . . . . . . . . . 9-9

2022 – 2023 viii

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Contents Page

Section 9 – Electric Metering: Components and Cable Terminating Facilities (continued)

Figure 9-12 Meter Box for Transformer-Rated Metering (Single-Phase or Three-Phase Installations) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10

Figure 9-13 Remote Metering Cabinet (Three-Phase Installations) . . . . . . . . . . . . 9-11

Figure 9-14 Typical Underground Service Termination Section and Pull Box, Wall-Mounted or Pad-Mounted (Floor-Standing) . . . . . . . . . . . . . . . . 9-14

Figure 9-15 Detail of Clearance Requirements for Adjacent Termination Bus Stubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15

Figure 9-16 Detail of Aluminum, Termination Bus Stubs . . . . . . . . . . . . . . . . . . . 9-16

Figure 9-17 Service-Terminal Conductor Connector . . . . . . . . . . . . . . . . . . . . . . . 9-17

Section 10 – Electric Switchboards: 0 Volts Through 600 Volts

Figure 10-1 Switchboard Wall Opening Between Sections . . . . . . . . . . . . . . . . . . 10-6

Figure 10-2 Standard Switchboard, CT Compartment, 0 Amps−600 Amps, Single Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-8

Figure 10-3 Standard Switchboard, CT Compartment, 0–1,000 Amps and 1,001–1,200 Amps, Three Phase . . . . . . . . . . . . . . . . . . . . . . . . 10-10

Figure 10-4 Bus Drilling Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11

Figure 10-5 Standard Switchboard, CT Compartment, 1,001 Amps−3,000 Amps, Single-Phase or Three-Phase, 3-Wire Service . . . . . . . . . . . . . . . . . . 10-12

Figure 10-6 Standard Switchboard, CT Compartment, 1,001 Amps−3,000 Amps, Three-Phase, 4-Wire Service . . . . . . . . . 10-14

Figure 10-7 Standard Switchboard, CT Compartment, 3,001 Amps and Larger, Three-Phase, 3-Wire Service . . . . . . . . . . . 10-16

Figure 10-8 Standard Switchboard, CT Compartment, 3,001 Amps and Larger, Three-Phase, 3-Wire or 4-Wire Service . . . 10-18

Figure 10-9 Switchboards, 0 Volts−600 Volts, CT Compartment, 1,001 Amps−3,000 Amps, Removable Link and CT Support (One-Bolt Configuration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-20

Figure 10-10 Switchboards, 0 Volts−600 Volts, CT Compartment, 1,001 Amps−3,000 Amps, Removable Link and CT Support (Four-Bolt Configuration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-21

ix 2022 – 2023

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Contents Page

Section 10 – Electric Switchboards: 0 Volts Through 600 Volts, continued

Figure 10-11 Switchboards, 0 Volts−600 Volts, CT Compartment, 3,001 Amps and Larger, Removable Link and CT Support (Two-Bolt Configuration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22

Figure 10-12 Switchboards, 0 Volts−600 Volts, CT Compartment, 3,001 Amps and Larger, Removable Link and CT Support (Six-Bolt Configuration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-23

Figure 10-13 Standard Section for Self-Contained Meter Sockets, 0 Amps−225 Amps, Installed in Switchboards: Nonresidential . . . . 10-25

Figure 10-14 Pull Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-27

Figure 10-15 Separate Pull Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-27

Figure 10-16 Bottom-Fed Service Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-27

Figure 10-17 Switchboard Pull Section–High Entry . . . . . . . . . . . . . . . . . . . . . . . . 10-30

Figure 10-18 Switchboard Pull Section–Low Entry . . . . . . . . . . . . . . . . . . . . . . . . 10-30

Figure 10-19 Extended Top on Switchboard Pull Section Front View (Side Entry) or Side View (Back Entry) . . . . . . . . . . . . . 10-31

Figure 10-20 Additional Side or Back Switchboard Pull Section–High Entry . . . . 10-32

Figure 10-21 Additional Side or Back Switchboard Pull Section–Low Entry . . . . 10-33

Figure 10-22 Arranging Conduit in the Termination or Additional Pull Section (Example of a Front View, High Back Entry) . . . . . . . . . . . . . . . . . . 10-34

Figure 10-23 Landing Terminal Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-37

Figure 10-24 Spacing Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-37

Figure 10-25 Buses Accessible From Only One Side (Bolts Must Be Secured in Place) . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-37

Figure 10-26 Buses Accessible From Either Side (Mounting Surfaces on Both Sides of Bus) . . . . . . . . . . . . . . . . . . . . 10-37

Figure 10-27 Standard Switchboard Service Section with CT Compartment and Filler Panel, 0 Volts−600 Volts . . . . . . . . . . . 10-40

Figure 10-28 Low-Profile Switchboard Service Section, with CT Compartment, for Underground Service . . . . . . . . . . . . . . . 10-41

Figure 10-29 Standard Switchboard Service Section, 15-Inch Hinged Panel for Socket Meter and Test Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-42

2022 – 2023 x

List of Figures

Contents Page

Section 10 – Electric Switchboards: 0 Volts Through 600 Volts, continued

Figure 10-30 Standard Switchboard Service Section, 30-Inch Panel for Socket Meters and Test Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-43

Figure10-31 Outdoor or Rain-Tight Enclosures for Switchboards . . . . . . . . . . . . 10-44

Figure10-32 Outdoor or Rain-Tight Enclosures for Switchboards . . . . . . . . . . . . 10-44

Figure10-33 Outdoor or Rain-Tight Enclosures for Switchboards . . . . . . . . . . . . 10-44

Figure 10-34 Outdoor or Rain-Tight Enclosures for Switchboards . . . . . . . . . . . . 10-44

Figure 10-35 Existing Switchboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-47

Section 11 – Electric Switchboards: 601 Volts Through 25,000 Volts, and Primary Services

Figure 11-1 Primary Switchgear Termination Section Pad Detail . . . . . . . . . . . . . 11-6

Figure 11-2 Hinged Meter Panel with Multiple Sockets for 2,400-V to 27,000-V Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8

Figure 11-3 Hinged Meter Panel with Dual Socket for 2,400-V Through 27,000-V Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-9

Figure 11-4 Typical, High-Voltage Metering Enclosure: 2,400-V Through 17,000-V Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12

Figure 11-5 Typical, High-Voltage Metering Enclosure:17,001-V Through 25,000-V Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13

Figure 11-6 Typical, High-Voltage Metering Enclosure, 17,001-V Through 25,000-V Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14

Figure 11-7 Additional Side or Back Switchgear Pull Section–High Energy . . . 11-16

xi 2022 – 2023

List of Figures

This Page Intentionally Left Blank

2022 – 2023 xii

Section 1

General

Contacting overhead or underground electric lines or equipment and natural gas pipelines can cause serious injury or death. Any part of a crane, scaffold, construction material, antenna, cable, rope, guy wire, or tool that touches an overhead electric line or penetrates an underground cable can become energized. Penetrating an underground natural gas line with a backhoe or other tool can cause a violent explosion.

WARNING

To avoid potential accidents, do not begin to excavate before identifying underground facilities.

State law requires applicants to contact Underground Service Alert (USA) by dialing 811 at least 2 working days before excavation (weekends and holidays excluded). Ensure that you call USA when planning underground work, before digging begins, to allow adequate time for USA to determine the location of underground gas and electric lines or equipment. The potential for an accident exists if applicants fail to request USA to identify underground utility facilities before excavation begins.

First, the applicant must mark the excavation area with white paint. Then, USA arranges for participating companies to mark the locations of their underground facilities at the jobsite. This is a free service. See the USA color-code identifiers below and on the back of this manual.

Additional information is available at www.pge.com/digsafely. Also, see USA services at the USA North website at http://www.usanorth.org. USA is a locating service for excavation only. Do not use USA for design purposes.

Table 1-1 USA Color Coding [1]

1 Call 2 working days before you dig.

1-1 2022 – 2023

USA

Dig Safely

Section 1, General

All applicants or persons authorized by PG&E who are working on, working near, or observing others working on any PG&E equipment, enclosures, or other facility potentially are exposed to arc-flash hazards and are required to wear flame-resistant (FR) clothing. The requirement to wear FR clothing applies to everyone. Applicants and their personnel must wear FR clothing before being allowed access to perform work in and around PG&E facilities. Also, applicants and their personnel must ensure that they wear the appropriate level of FR clothing for the job being performed. The tags on all FR garments must clearly identify them as flame resistant and clearly indicate the arc rating hazard risk category (HRC). All garments must have a minimum rating of HRC 2.

See Appendix A, “Acronyms and Glossary,” for a definition of facilities.

1.1. Purpose

N OTE : For the purpose of this manual, the word “applicant” is used generically to refer to the Pacific Gas and Electric Company (PG&E) customer, or to the person or persons representing the PG&E customer in the application/construction process, including a contractor, design consultant, or installer. The word “customer” is used only when the word “applicant” is not applicable. Also, PG&E is sometimes referred to as the “Company” throughout this manual.

This manual is designed to help applicants establish gas and electric service. By reading the mandates published in this manual, applicants will understand not only the steps required to apply for service, but also the legal and safety requirements driving those steps. PG&E provides this manual to all gas and electric applicants in an effort to ensure that the Company can continue to deliver safe, uniform service.

The 2022-2023 Greenbook supersedes all previous editions and revisions. This manual is a collection of requirements and policies for establishing electric and gas service to new or remodeled installations. The Greenbook typically is updated at least annually; however, PG&E’s building requirements, as well as gas and electric design standards, are subject to change throughout the year. It is important that all applicants consult the online version of the Greenbook before finalizing project plans.

In addition to the requirements provided in this manual, applicants for gas or electric service also must comply with federal regulations and with all applicable tariffs, as well as the rules and general orders set forth by the California Public Utilities Commission (CPUC).

2022 – 2023 1-2

Section 1, General

1.1. (continued)

These regulations and orders include, but are not limited to, the following documents:

• “ ” General Order (G.O.) 95, Rules for Overhead Electric Line Construction

• G.O. 112-F, “Rules Governing Design, Construction, Testing, Operation, and Maintenance of Gas Gathering, Transmission, and Distribution Piping Systems”

  • G.O. 128, “Rules for Construction of Underground Electric Supply and Communication Systems”

  • Code of Federal Regulations ( CFR ), Title 49, “Transportation,” Part 192, “Transportation of Natural and Other Gas by Pipeline: Minimum Federal Safety Standards”

Finally, applicants must comply with all other federal, state, and local regulations. These regulations may include a Federal Aviation Administration (FAA) review for structures that impinge on navigable airspace. In such cases, the FAA requires filing notice of proposed construction a minimum of 45 days before starting the proposed construction. The FAA may issue a determination of hazard to air navigation and recommend actions to mitigate or eliminate that hazard. For additional information, please contact your PG&E project coordinator.

1.2. Permits and Inspections

Builders who are constructing new buildings or remodeling existing buildings must conform to the following guidance documents.

A. The current provisions of city and county ordinances.

B. Rules on file with, or issued by, the CPUC.

C. Applicable rules and laws of the state of California, including, but not limited to, the following three codes.

- Plumbing codes

- Mechanical codes

- Electric codes

Local and state ordinances require applicants to obtain the appropriate permits and final inspections before PG&E establishes services to any building or structure.

In areas where local ordinances governing gas or electrical installations do not exist, or where inspections provided by local jurisdictions for such installations are not available, the applicant must obtain written confirmation from a qualified person that the facilities meet the requirements specified in this manual.

PG&E will not establish gas or electric service until the gas piping or electric service facilities are installed satisfactorily.

N OTE : Gas meter release forms obtained from a permitting agency must include the specific, requested pressure (e.g., 7-inches w.c., 2 psig, 5 psig).

1-3 2022 – 2023

Section 1, General

1.2. (continued)

PG&E’s inspection process includes service requirements that are not governed by local or state codes. Parts of the applicant’s installation may require approval by state, local, and PG&E inspectors .

1.2.1. Pre-Construction Meetings

All applicant-installed and shared construction jobs require a pre-construction meeting. Pre-construction meetings provide a time to discuss safety requirements and expectations and to complete a pre-construction meeting checklist.

The pre-construction meeting is intended to:

    - Introduce key individuals and exchange contact information.

    - Discuss the project timelines.

    - Advise personnel about construction obligations and requirements.

    - Review construction drawings and gas service records (GSRs).

    - Discuss warranty obligations.

    - Clarify roles and responsibilities.

    - Discuss proper PG&E operator qualifications for covered tasks.

    - Confirm if there is a Facility at Risk letter.

    - Confirm applicant responsibilities for as-built documentation.

The PG&E job owner is responsible for scheduling and facilitating pre-construction meetings and for ensuring that Form TD-4462M-F01, “Pre-Construction Meeting Checklist,” is completed. Participants in formal pre-construction meetings must include :

    - Applicant and the applicant’s representative

    - Applicant’s contractor

    - PG&E’s senior new business representative (SNBR), new business

representative (NBR), or industrial power engineer (IPE)

    - PG&E’s gas and electric inspectors

    - Representatives from all other joint trench utilities

    - Corrosion mechanic, as needed

Responsible PG&E employees and contract personnel must follow Company qualifications, operator qualifications (OQs), standards, and procedures related to job-specific inspections.

2022 – 2023 1-4

Residential

Nonresidential

Section 1, General

1.3. Applying for Building and Renovation Services

An Application for service process online form is required for all new gas or electric services, as well as for relocating or rearranging existing services. Whether you are building or renovating your home, expanding your business facility, or opening a facility at a new location, you can apply on the Internet at “Customer Connections Online” (www.pge.com/customerconnections) and track your project with our new online tools.

Also, at the PG&E Internet websites below, you will find guides for getting started, process overviews, project cost ranges, online applications, and more. This information is provided to help you plan your project and get started. For more information, visit the following web pages.

- [Residential](https://www.pge.com/en_US/residential/home.page?)

- [Small & Medium Business](https://www.pge.com/en_US/small-medium-business/small-medium-business.page?)

• Large Business

Applicants without Internet access may contact the Building and Renovation Service Center 1-877-743-7782. PG&E representatives will provide you with details about the process and assist you with applying for service.

The process for installing or changing gas and electric services takes time and planning. PG&E recommends you contact us early in the process with accurate load information and the date that the services are required to allow for adequate time to complete your service request.

Large-capacity gas meters, electric transformers, or other special equipment often require several months lead time to ensure a timely delivery from the manufacturer.

Applicants must contact their local PG&E project coordinators when approved construction plans change, or when situations that affect PG&E’s service arrangements occur during construction, so that mutually satisfactory, alternate arrangements can be made.

To assist PG&E in its goal to deliver safe, uniform service, applicants should use the following guidelines when transmitting electronic drawing files for architectural, mechanical, and civil site plans .

1. PG&E’s electronic drawing tool is AutoCAD, .DWG format. Ensure that submitted electronic drawings are either readable using, or compatible with, AutoCAD.

2. Applicants can upload documents at PG&E’s “Customer Connections Online” (www.pge.com/customerconnections) Internet website. Drawings also may be sent as an email-attached file.

3. Applicants who do not use the online option described in Number 2. above should send drawings for large projects in a zipped format.

4. Use layering, if possible, and preserve the layering when transferring files to PG&E.

1-5 2022 – 2023

Customer

Connect

Section 1, General

1.3. (continued)

5. Save all drawings in model space instead of paper space.

6. Make drawing plans two dimensional, with the “Z” elevation at zero.

7. Ensure that any External Reference Files (Xref) or drawing updates maintain a consistent insertion point.

8. Include all related drawing files (e.g., elevations, landscape plans, other proposed underground facilities).

Please contact your local PG&E project coordinator if you have any questions.

PG&E is committed to complying with all federal, state, and local environmental laws, regulations, and rules. Applicants must provide PG&E with copies of permits showing that they have met all environmental compliance requirements when submitting applications for service. See the “Applicant Responsibilities for Environmental Reviews for Service Requests” letter for more information. Applicants can obtain copies of this letter from their local PG&E project coordinators.

Project permits or approvals may contain conditions that require or restrict certain service designs or construction activities by PG&E, applicants, agents, consultants, or contractors. The applicant must bring these conditions to PG&E’s attention to ensure that the requirements or restrictions are included in the project design during the planning and construction phases. When submitting the service application, the applicant must provide PG&E with a written copy of any special conditions, identifying the requirements or restrictions that affect the project design and/or PG&E installation activities.

1.4. Changes in Requirements

PG&E may revise its design and construction documents relating to applicant service requirements between updates to this manual. Except when required by law, PG&E will apply only those construction and design specifications, standards, terms, and conditions that are applicable to a new extension of service project for the 18 months following the date the application for a new extension of service project is approved. The approval date of a new extension of service application refers to the earlier of either the effective date of the contract for the extension of gas and/or electric service or the date when PG&E first invoices the customer for the extension of gas and/or electric service.

These requirements apply as long as applicants complete approved projects within 18 months. If the applicant has not initiated construction within 18 months of PG&E’s initial approval, PG&E may review the design and, if warranted, refresh the cost estimate.

If the applicant does not fulfill obligations under the extension agreement, PG&E may, at its discretion, cancel the agreement (see Provisions Form 62-0982, Section 20). PG&E can then request another review of the design before approving construction activities.

Also, for applicant design jobs, refer to the Understanding applicant design and installation responsibilities website. On applicant design jobs, the version of the design and construction document that is in effect on the date PG&E approves and signs-off on the final Globals package determines the requirements that the design must meet. The Globals package is valid for 90 days.

2022 – 2023 1-6

Section 1, General

1.4. (continued)

When building projects are divided into separate phases (or tracts) where some of the construction phases will not be completed for more than 18 months from the date the project is approved, PG&E will initiate a review of the design and apply current PG&E construction and design specifications, standards, forms, and conditions that are applicable to the remaining phases of the project.

Applicants are encouraged to contact PG&E early in the planning stages of their projects. By consulting with their local project coordinators, applicants are made aware of the current construction requirements before they initiate any design work.

Do not perform construction using an unauthorized or preliminary drawing. The applicant assumes full responsibility for errors, omissions, or changes if the project is constructed using either preliminary drawings or drawings that are not approved by PG&E.

PG&E will not accept or assume ownership of facilities installed by the applicant before the construction design is completed and approved by PG&E. Additional facilities, even if provided at no cost to PG&E, represent increased plant in the rate base. This includes associated, long-term increases in taxes and maintenance

expenses.

Applicants are responsible for any additional design changes or reconstruction costs that may be required if PG&E does not accept unapproved facilities. PG&E will not energize or pressurize a system that has not received final design approval and passed all inspections.

Engineering and construction documents or requirements are incorporated into new editions of this manual; however, revisions are made periodically. Applicants can obtain revised engineering documents or requirements in two ways:

• Find these documents on PG&E’s Internet site (www.pge.com/greenbook).

• These documents are available through your local PG&E project coordinators.

Some of the information contained in this manual is based on government codes and ordinances that are subject to change as determined by the governmental authorities. PG&E does not assume responsibility for keeping information in this manual current with these government codes, ordinances, or other requirements. Applicants should consult the responsible governmental agency with questions about the applicability of any construction procedures or requirements.

1.5. Additional Nonresidential (Commercial and Industrial) Service Information

For electric installations of more than 600 volts (V), refer to Section 11, “Electric Switchboards: 601 Volts Through 25,000 Volts, and Primary Services.” Generally, this manual does not include information about large nonresidential (i.e., commercial or industrial) gas loads; however, PG&E provides applicants with individual job-design specifications after they request service.

1-7 2022 – 2023

Section 1, General

1.6. Design and Construction

1.6.1. PG&E’s Responsibilities

PG&E is responsible for planning, designing, and engineering its service facilities and service laterals using Company standards for design, materials, and construction.

1.6.2. Applicant’s Responsibilities

Residential and nonresidential applicants for gas and/or electric extensions and services may select a contractor to design their facilities.

PG&E requires a clear path from existing distribution facilities to the location on the applicant’s jobsite where the services will be connected. Depending on the project, the applicant may need permits or approvals for these supply lines in order to comply with federal, state, and local requirements, regulations, and rules (including environmental laws).

Local PG&E project coordinators can provide applicants with information about available options for clearing supply lines, as well as any associated design and contract requirements for their projects.

Before designing their projects, applicants and/or their contractors must complete PG&E’s Application for service process online form, provide applicable construction plans, and submit any required project deposits to PG&E.

1.6.3. Providing Access to PG&E Electric Facilities

Applicants are required to provide access roads on their properties to PG&E pad-mounted or subsurface (i.e., transformer or switch) facilities. The roads must be accessible to PG&E at all times and constructed with either a Class 2 or an AB road base that is a minimum of 10 feet wide, with 18 feet of vertical clearance above. Also, there must be a 30-foot radial, hammerhead-style turn-around area at the end of the roads.

to provide access roads on their properties to PG&E pad-mounted or subsurface (i.e., transformer or switch) facilities. The roads must be accessible to PG&E at all times and constructed with either a Class 2 or an AB road base that is a minimum of 10 feet wide, with 18 feet of vertical clearance above. Also, there must be a 30-foot radial, hammerhead-style turn-around area at the end of the roads.

Do not place equipment more than 15 feet away from the edge of the road to facilitate the placement of the equipment using lifting equipment. Failure to design for and construct based on this guidance may result in the requirement that the applicant sign a Rule 16 Special Facilities Lifting Agreement whereby, during construction, maintenance, and operations, the applicant will be responsible for fees associated with PG&E’s specialized lifting contractors and equipment.

Avoid placing equipment immediately below, or in the vicinity of, overhead transmission, distribution, secondary voltage supply, and communication lines, when possible.

This guidance promotes the safe operation of the electric grid. By limiting equipment installation below energized lines, the chance that specialized lifting equipment contact an overhead energized line is minimized. Additionally, if safe working clearances cannot be maintained when working with specialized lifting equipment, restoration efforts could be delayed and necessitate an emergency shutdown, or require the temporary removal of the lines, to complete work safely.

2022 – 2023 1-8

Section 1, General

1.6.3. (continued)

In cases where locations exist where equipment can be placed to minimize the possibility of exposure to live lines, these locations must be used. PG&E and the applicant must work together to identify a mutually agreeable location for installing the equipment safely. Only after all local relocation efforts have been exhausted and local service planning agrees that this installation could be safely considered, should the proposed installation be submitted to the Distribution Standards department for the consideration of variance. When a location cannot be agreed to that meets with the intent of this guidance, PG&E has the final decision on placement of the equipment.

Refer to Numbered Document 051122, “Clearances and Location Requirements for Enclosures, Pads, and Underground Equipment,” for additional requirements. When in doubt, contact your local PG&E Electric Construction supervisor for guidance before approval of a design.

1.6.4. Installing Transformers

PG&E will specify the type of transformer installations to be constructed on applicants’ premises.

Applicants may contact their local PG&E project coordinators to obtain specific transformer requirements for their projects.

PG&E’s standard transformer installations for residential, commercial, and industrial services, excluding agricultural areas, are described in Item A. and Item B. below:

A. A pole-bolted transformer in overhead areas when the applicant’s load does not require a 75 kilovolt ampere (kVA) or greater transformer.

B. A pad-mounted transformer in underground areas or in an area with overhead facilities when PG&E determines that the applicant’s load requires a 75 kVA or greater transformer.

As described in Electric Rule 15 , “Distribution Line Extensions,” and Electric Rule 16 , “Service Extensions,” found online at https://www.pge.com/tariffs/index.page., requests for the installation of a subsurface transformer are not allowed when it is technically feasible to install a pad-mounted transformer.

PG&E’s standard transformer installations for agricultural services are described in item C. below:

C. A pole-bolted transformer in overhead areas when the applicant’s load does not exceed the capability of PG&E’s largest available kilovolt ampere (kVA) overhead transformers for the voltage and phase being served.

If required or requested, the installation of a pad-mounted transformer is also allowed.

Also see Subsection 1.17., “Standard Service Voltage and Load Limitations,” on Page 1-24.

1-9 2022 – 2023

Section 1, General

1.6.3. (continued)

Applicants must provide space on their premises at locations approved by PG&E for standard transformer installations if PG&E determines that the load to be served requires a separate transformer installation to serve only the applicant.

N OTE : For reasons of safety and reliability, PG&E does not allow applicants to install water sprinklers to cool off transformers.

1.6.5. Underground Electric Service Extensions

Applicants must ensure that an underground service is installed, where required, to comply with applicable tariff schedules, laws, ordinances, or similar requirements of governmental authorities having jurisdiction, and may be necessary as determined by PG&E where an applicant’s load requires a separate, 75-kVA or greater transformer installation. For more information, see Electric Rule 16 .

1.7. Connecting and Sealing Services

A. PG&E provides standard service to applicants as described below.

1. Establish service at one service delivery point, through one meter, and at one voltage class or pressure.

2. Design service to extend from the connection to the distribution facilities along the shortest, most practical, and most available route to the service termination facility or service delivery point, as determined by PG&E.

3. PG&E may require a service location to be closer to the distribution facilities in the following instances:

   • In areas where the nearest building is a considerable distance (i.e., 200 feet or more) from the property line.

   • If, in PG&E’s judgment, there is a potential hazard between the property line and service location.

B. The requirements for standard service are described below.

1. Only authorized PG&E employees can connect or disconnect PG&E’s gas or electric service to the building or structure.

2. Unauthorized persons must not tamper with or break PG&E seals placed on meters and associated service equipment.

3. Only authorized PG&E employees can remove, replace, or interfere with PG&E’s meters, seals, connections, padlocks, or other locking devices.

4. Applicants must call PG&E if it is necessary either to disconnect the service or remove the meter because of remodeling, alterations, or other activities.

2022 – 2023 1-10

Section 1, General

1.7. (continued)

5. Applicants must not connect house gas pipes or other applicant facilities to the plugged side of the gas service-tee fitting. That fitting is for PG&E’s use only.

6. Applicants may place gas and electric service and metering equipment in dedicated rooms within buildings when approved by PG&E.

7. Applicants must not locate service termination enclosures in the interior, inhabitable area of residences.

8. Applicants must ensure that all service and metering facilities are readily accessible.

9. PG&E must review and approve of all service and meter locations and arrangements before installing any metering facilities, service-termination enclosures, or other utility service facilities.

10. The applicant assumes the risk for any work performed without requesting PG&E’s advanced approval. PG&E can charge the applicant if it is necessary to make changes to unapproved work.

11. An unauthorized connection to PG&E’s gas or electric facilities, or to facilities used to provide utility services, may be a violation of the California Penal Code , Part 1, “Crimes and Punishments,” Title 13, “Crimes Against Property,” Chapter 5, “Larceny,” Part 498, and Chapter 15, “Malicious Injuries to Railroad Bridges, Highways, Bridges, and Telegraphs,” Part 593c. Violators could be subject to damages pursuant to California Civil Code , Division 3, “Obligations,” Part 4, “Obligations Arising From Particular Transactions,” Title 3.5, “Utility Services,” Section 1882, et. Sequitur. These sections address connecting to utility meters and facilities and diverting utility services. They specifically prohibit any person from tampering with, making, or causing to be made any connection or reconnection with property owned or used by the utility to provide utility service, without the utility’s authorization or consent.

utility](https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=1882.&lawCode=CIV) meters and facilities and diverting utility services. They specifically prohibit any person from tampering with, making, or causing to be made any connection or reconnection with property owned or used by the utility to provide utility service, without the utility’s authorization or consent.

12. Applicants or their contractors must not paint, color, or discolor the gas and electric facilities, including the meters.

1.8. Access to an Applicant’s Residence, Building, or Property

PG&E has the right to access Company facilities located on an applicant’s premises at any time, for any purpose connected with furnishing gas and/or electric service. These purposes include, but not limited to, the following activities:

- Reading meters.

- Inspecting utility facilities.

- Making routine repairs.

- Performing maintenance and emergency work.

- Exercising any and all rights secured to PG&E either by law or under

PG&E’s tariff schedules, including Electric Rule 16 , “Service Extensions,” and Gas Rule 16 , “Gas Service Extensions.”

1-11 2022 – 2023

Section 1, General

1.9. Overhead Electric Lines

The California Division of Occupational Safety and Health (Cal/OSHA), Title 8, Division 1, “Department of Industrial Relations,” Chapter 4, “Division of Industrial Safety,” Subchapter 4, “Construction Safety Orders,” Article 15, “Cranes and Derricks in Construction,” Section 1612, “Power Line Safety,” and the associated sub-articles, require that minimum safe working and traveling distances be maintained from cranes and derricks to overhead electric lines.

In support of these regulations, PG&E provides the voltage for overhead lines within two business days of receiving a customer inquiry. Call the PG&E Building and Renovation Service Center (BRSC) at 877-743-7782 or Customer Service at 1-800-743-5000.

Cal/OSHA, Title 8, Chapter 4, Subchapter 5, “Electrical Safety Orders,” Group 2, “High-Voltage Electrical Safety Orders,” Article 37, “Provisions for Preventing Accidents Due to Proximity to Overhead Lines (Formerly Article 86), Section 2946, “Provisions for Preventing Accidents Due to Proximity to Overhead Lines,” requires that minimum safe working distances be maintained from overhead electric lines. Specific requirements taken from the regulation are shown in Table 1-2, “Minimum Safe Working Distances (Scaffolds, Equipment, Tools, Structures, and People),” and Table 1-3, “Minimum Safe Working Distances (Boom-Type Lifting or Hoisting Equipment),” both on Page 1-12.

](http://www.dir.ca.gov/Title8/2946.html) requires that minimum safe working distances be maintained from overhead electric lines. Specific requirements taken from the regulation are shown in Table 1-2, “Minimum Safe Working Distances (Scaffolds, Equipment, Tools, Structures, and People),” and Table 1-3, “Minimum Safe Working Distances (Boom-Type Lifting or Hoisting Equipment),” both on Page 1-12.

Table 1-2 Minimum Safe Working Distances (Scaffolds, Equipment, Tools, Structures, and People)

2022 – 2023 1-12

USA

Dig Safely

Section 1, General

1.9. (continued)

Table 1-3 Minimum Safe Working Distances (Boom-Type Lifting or Hoisting Equipment)

Contact a local PG&E project coordinator with any questions about working near overhead electric lines or about nominal voltage.

1.10. Underground Electric Lines and Gas Pipelines

As mentioned on Page 1-1, state law requires applicants to contact USA by dialing 811 at least 2 working days before excavation (weekends and holidays excluded). Applicants must call USA when planning underground work (before digging begins) to allow adequate time for USA to determine the locations of underground transmission and distribution gas and electric lines and/or equipment.

USA arranges for participating companies to mark the locations of their underground facilities at the jobsite. There is no charge for this service. The applicant must mark each end of the excavation area with white paint as well as the total length in feet. Applicants should also use arrows to indicate the direction of the trench. For more information, go to www.pge.com/digsafely. Also, learn more about USA services at the USA North website (http://www.usanorth.org).

1.10.1. Safe Landscaping Near Underground Facilities

When any new vegetation are planted, ensure that a minimum of 5 feet is maintained from underground transmission and distribution gas lines as well as distribution electric lines. Please refer to PG&E’s Guide to Safe Landscaping Near Gas Pipelines and the Guide to Safe Landscaping Near Underground Electric Lines (located in Appendix B, “Electric Gas and Service Documents,” located on Page B-5) for helpful information about the types of trees and plants that are safe for areas near transmission and gas pipelines.

1.11. PG&E Safety Training Resources

PG&E wants to ensure that contractors and construction workers avoid electric and natural gas hazards by practicing basic safety rules. Please visit www.pge.com/contractorsafety, “Contractor Safety Program Contract Requirements,” for materials to assist you in providing your employees with safety training.

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Section 1, General

1.12. SmartMeter � Program

PG&E’s SmartMeter Program is part of a statewide effort driven by the CPUC to upgrade California’s energy infrastructure with automated metering technology. The SmartMeter Advanced Meter Reading system includes a programmable, solid-state electric meter and a gas module, installed on a traditional gas meter at each service delivery point to measure and record

energy use.

For more information on SmartMeters, including instructions on tracking your energy use online or information on the opt-out program, please visit Understanding your energy use with SmartMeter (www.pge.com/smartmeter)

1.13. PG&E Online (Website)

The PG&E website at www.pge.com has many tools for building or renovating homes, expanding or renovating business facilities, or opening new locations.

The PG&E Building and Renovation Services guides are available for residential services at www.pge.com/building/ and include the following information:

- [Visit our Application for service process](https://www.pge.com/en_US/business/services/building-and-renovation/understand-the-process/understand-the-process.page)

- [Choose a guide](https://www.pge.com/en_US/residential/customer-service/home-services/renovating-and-building/understanding-the-application-process/getting-started-guides.page)

• Manage your project at Customer Connections Online

  • Excess flow valves

  • Get estimates

  • Pay your project charges online

These tools can help you plan your project and get started. For more information, visit the following web pages.

 - [Apply online and track your project at Customer Connections Online](https://www.pge.com/en_US/small-medium-business/building-and-property/building-and-maintenance/building-and-renovation/manage-your-services.page?WT.mc_id=Vanity_customerconnections)

(www.pge.com/customerconnections)

 - Residential services at _[Discover building and renovation services for](https://www.pge.com/en_US/residential/customer-service/home-services/renovating-and-building/renovation-and-building.page?WT.mc_id=Vanity_building)_

homeowners (www.pge.com/building/)

 - Business and agricultural services at [Discover building and renovation](https://www.pge.com/en_US/large-business/services/building-and-renovation/building-and-renovation-overview/building-and-renovation-overview.page?WT.mc_id=Vanity_newconstruction)

services for businesses (www.pge.com/newconstruction)

SmartMeter [TM]

Customer

Connect

1.13.1. Electric and Gas Service Requirements Manual (aka Greenbook )

The Greenbook is available on the Internet at www.pge.com/greenbook.

N OTE : Communicate and coordinate all gas and electric service arrangements through your assigned PG&E project coordinator. As mentioned earlier in this section, PG&E documents may be updated independently of this manual; however, the project coordinators provide applicants with the latest updated or revised information on request. Applicants must contact their assigned project coordinators to ensure that they are correctly interpreting and using the information found in this manual and in other governing documents.

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Section 1, General

1.13.2. Rates and Tariffs

Rate and tariff information is available on the website “Electricity rates: Choose the plan that works best for you,” at http://www.pge.com/about/rates/. This information also is available on the PG&E homepage (http://www.pge.com/) under the Rate Plans drop down. Also, the online “Tariffs” provide current gas and electric rate schedules, preliminary statements, rules, forms, advice letters, and more.

1.14. Determining the Electric Service Rating

A. PG&E Service Rating: The rating of the PG&E service to be supplied is the current rating in amperes of the electrical enclosure where PG&E terminates and connects its supply facilities and conductors. This electrical enclosure or equipment also may be known as the service-termination section, pull can, service section, meter panel, or service-termination enclosure. For overhead services, the service rating is the rating of the electrical enclosure or equipment connected to the weatherhead and mast.

B. Enclosure Nameplate Labeling and Rating: Electrical enclosures must list on their manufacturers’ main labels (nameplate) a maximum current rating, in amperes, allowed for the equipment. This maximum rating must be written as a numerical value (e.g., 125, 800, 2,500) and must be acceptable to PG&E. The nameplate label must also describe the voltage, number of phases, and additional electrical information. The nameplate label must be rated for ultraviolet (UV) radiation and exposure of outdoor environments. The label must be easily accessible and permanently attached to the outside front of the equipment enclosure and, when applicable (e.g., switchboard), on each individual section. The label also may be attached to the inside of the enclosure’s outer door.

1. For pad-mounted (i.e., free-standing) enclosures, this information typically is listed on the main nameplate labels as the “Supply” rating. See Figure 1-1, “Nameplate Rating Label Example: Pad-Mounted Electrical Switchboard or Termination Enclosure,” on Page 1-19.

When multiple sections are physically connected together to form a switchboard or switchgear, the supply rating listed on each section, whether bussed or cabled, should typically be the same. A “Section” rating also should be provided as a numerical value on each individual section label. See Figure 10-35, “Existing Switchboard,” on Page 10-47, as an example of one type of switchboard.

2. For wall-mounted panelboards and termination enclosures, the maximum ampacity rating is for the entire enclosure and must be listed on the main rating label independently from any individual component (e.g., main bus, meter socket, main disconnect) rating. See Figure 1-2, “Label Example: Wall-Mounted Electrical Meter Panel or Termination Enclosure,” on Page 1-19 for an example. The maximum ampacity rating may be titled on the label in any of the following ways.

mum ampacity rating is for the entire enclosure and must be listed on the main rating label independently from any individual component (e.g., main bus, meter socket, main disconnect) rating. See Figure 1-2, “Label Example: Wall-Mounted Electrical Meter Panel or Termination Enclosure,” on Page 1-19 for an example. The maximum ampacity rating may be titled on the label in any of the following ways.

    - Maximum Amps

    - Maximum Utility Rating

    - Maximum Equipment Rating

1-15 2022 – 2023

Section 1, General

1.14. (continued)

3. If a maximum ampacity rating is not included on the electrical enclosure label, PG&E uses the individual component (e.g., main bus, meter socket, main disconnect, current-transformer mounting bracket) with the greatest rating as the service rating.

4. If there are multiple ratings or conflicting ratings either on a single electrical enclosure or on multiple enclosure sections that are physically connected together (i.e., switchboard, switchgear), PG&E uses the greatest rating as the service rating.

C. Main Service Disconnect: For installations supplying a single main-disconnecting means (i.e., main breaker or main disconnect switch), or for installations without a single disconnecting means (e.g., a service with no main disconnect and only individual disconnects), the rating of the PG&E service to be supplied is the rating of the electrical enclosure where PG&E terminates and connects its service conductors and not the rating of the main service disconnect.

For switchboards, the PG&E service rating is typically listed as the supply rating. For panelboards, the service rating is the maximum ampacity of the panel if listed on the label. If a maximum ampacity is not listed, then the service rating is the greatest rating for any individual component (e.g., main bus, meter socket) in the panelboard. For more information, see Subsection 1.14.A., “PG&E Service Rating,” on Page 1-15.

When a main service disconnect (i.e., switch, fuse, or breaker) is installed, the continuous current (i.e., ampere) rating should not exceed the rating of the electrical enclosure or the rating of the section where it is installed. The main service disconnect may have either the same rating or a lower rating than the electrical enclosure.

D. Overhead Service to Multiple Wall-Mounted Meter Panels or Meter Boxes: When more than one meter panel or meter box is connected to a separate, sealable gutter or other unrated raceway with power supplied from a PG&E overhead service, the PG&E service rating is the aggregate of all meter panel or meter box ratings.

EXAMPLE : Three meter panels rated at 200 amps, 100 amps, and 100 amps would have an aggregated rating of 400 amps (200+100+100).

For illustrations of these types of installations, refer to one of the following two figures:

- [Section 6, “Electric Metering: Residential,” Figure 6-11, “Overhead](https://www.pge.com/pge_global/common/pdfs/services/building-and-renovation/greenbook-manual-online/greenbook_manual.pdf#page=229)

Service, Grouped-Meter Installation Without a Main Switch (400 Amps Max, 1∅ or 3∅),” on Page 6-16.

• Section 7, “Electric Metering: Nonresidential, Industrial, and Agricultural,” Figure 7-11, “Overhead Service, Grouped-Meter Installation Without a Main Switch,” on Page 7-15.

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Section 1, General

1.14. (continued)

N OTE : Applicants can use PG&E approved termination enclosures that are manufactured for overhead or underground services and have a maximum ampacity listed on the nameplate labels. The maximum ampacity will be the PG&E service rating. If a termination enclosure is installed, then do not add up the ratings of the meter panels.

E. Existing Enclosures: If an existing electrical enclosure where PG&E terminated and connected its supply facilities and conductors does not have a visible rating, then the service rating is the maximum rating of the single main-disconnecting means (e.g., main circuit breaker) or of the aggregated maximum ratings of all the service breakers or disconnects if a main-disconnecting means is not present.

F. Agricultural Services: For agricultural services with a pump motor as the largest load, PG&E recommends that customers install a Variable Frequency Drive (VFD) or similar controller that uses a soft start (SS) system. These types of pump controllers help compensate for in-rush current.

1. For service termination and metering equipment with a main breaker or individual breakers built into the enclosure, refer to the requirements in Subsection 1.14.C., “Main Service Disconnect,” on Page 13.

2. For service termination and metering equipment without a main breaker or individual breakers built into the enclosure, PG&E recommends the following types of equipment be installed externally to serve as the main disconnecting means and circuit protection for customer equipment. The following requirements apply.

a. Class R, Dual-Element, Time-Delay Fuses: These types of fuses also compensate for in-rush current. When Class R fuses are installed, size them to the pump load but do not exceed the PG&E service rating by more than 125%.

EXAMPLE : A meter panel rated at 200 amps can have one main service disconnect with Class R fuses rated up to 250 amps (200 * 1.25). A meter panel rated at 400 amps can have one main service disconnect with Class R fuses rated up to 500 amps (400 * 1.25).

b. Electronic Circuit Breaker: The electronic breaker rating must not exceed the PG&E service rating. The breaker trip settings can be set to compensate for the in-rush current. See Section 5, “Electric Metering: General,” Subsection 5.7.4., “Electronic Trip Circuit Breakers,” on Page 5-32.

EXAMPLE : A meter panel rated at 600 amps can have one main electronic circuit breaker rated up to 600 amps (600 * 1.00).

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Section 1, General

1.14. (continued)

c. Thermal or Magnetic Circuit Breaker: When a standard circuit breaker is installed as the main disconnect and protective device for the customer circuit, the breaker’s maximum rating must be 125% or less of PG&E’s service termination and metering equipment rating.

EXAMPLE : A meter panel rated at 400 amps can have one main thermal or magnetic circuit breaker rated up to 500 amps (400 * 1.25).

3. When a main disconnect is not installed, and only individual service disconnects are installed on customer equipment, the aggregate total ampacity rating of all the individual service disconnects is allowed to exceed the PG&E service rating by a maximum of 125%.

EXAMPLE : A meter panel rated at 400 amps can have multiple individual service disconnects with an aggregated rating up to 500 amps. If there are three disconnects, the individual ratings could be 200 amps, 200 amps, and 100 amps or a combination that is 500 amps or less. If there are five disconnects, the individual ratings could be 50 amps, 75 amps, 75 amps, 100 amps, and 200 amps or a combination that is 500 amps or less.

2022 – 2023 1-18

1.14. (continued)

Section 1, General

Figure 1-1 Nameplate Rating Label Example: Pad-Mounted Electrical Switchboard or Termination Enclosure

Figure 1-2 Nameplate Rating Label Example: Wall-Mounted Electrical Meter Panel or Termination Enclosure

Note in reference to Figure 1-2 on Page 1-19.

1. As described in Subsection 1.14.B.2. on Page 1-15, use the maximum rating listed on the nameplate label for the whole electric meter panel to determine the PG&E service rating. If a maximum panel rating is not listed, then use the greatest rating for any component (e.g., bus) in the panel.

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Section 1, General

1.15. Changing an Applicant’s Approved Project or Existing Service Loads

An applicant must provide written notice to PG&E of any changes or plans to make material changes either in the amount or in the character of the gas and/or electrical load, equipment, or other facilities installed to supply gas and/or electricity to the applicant’s premises, structure, building, or other facilities. For more information, applicants can review Electric Rule 2 and Gas Rule 2, both called “Description of Service,” as well as Electric Rule 3 and Gas Rule 3, both called “Application for Service.” PG&E requires this written information to determine the following factors.

• The adequacy of the existing utility service and supply facilities.

• The need to modify those facilities to meet and supply the changed load or equipment requirements. This includes changes in the character or nature of the applicant’s previously approved gas and/or electric service.

Applicants must notify PG&E of any planned or intended changes in the load, character, or nature of the service required to supply the premises, structure, building, or other facilities.

If an applicant fails to notify PG&E, and the changes exceed the capabilities of the installed utility service, metering, or other equipment and damage those facilities, the applicant is liable for all damages and resultant costs to PG&E.

Applicants must provide PG&E with written notice immediately when they make any material change either in the amount or character of the gas loads and electric amps, appliances, or apparatus installed on the premises to be supplied with gas or electric energy.

1.16. Upgrading, Replacing, and Relocating Electric Facilities, or Adding Power Generation Sources

When PG&E determines that its existing service facilities must be replaced, those facilities are replaced as a new service extension under the provisions of the tariff rules. The following subsections describe the requirements when existing electric service termination and metering equipment are replaced.

N OTE : When replacing existing electric service equipment, refer to Section 2,

“Gas Services,” Subsection 2.4.2.E., “Panel Replacements and Conduit Connections to Existing Electric Panels, 400 Amps and Less, Within the Gas Clearance Area,” on Page 2-36, for gas meter set clearance requirements from any type of electrical equipment and materials. Also see Figure 2-22, “Clearance Requirements for an Existing Electric Meter/Panel,” also in Section 2.4.2.E.

2022 – 2023 1-20

Section 1, General

1.16.1. Upgrading Electric Facilities

An increase in the ampacity rating (e.g., 100 amps to 125 amps; 1,200 amps to 1,600 amps) of the equipment where PG&E terminates its service is typically defined as an upgrade. The ampacity rating also may be known as the service-entrance capacity. For example, when an applicant replaces an existing electric meter panel, switchboard, or termination enclosure with one that has a greater ampacity rating (i.e., upgrade), the applicant must meet all Greenbook requirements. Typically, this also includes installing new conduit and service conductors.

When a new meter panel is installed in a new location, the existing meter panel may not be used as a junction box to connect to existing load-side wires. The existing meter panel must be removed and covered by a solid, permanent exterior wall.

See the sections titled “Upgraded Panel” in the numbered documents below for conditions when the conduit or cable may not require upgrading, as determined by PG&E.

• Numbered Document 063927, “Methods and Requirements for Installing Residential Underground Electric Services 0−600 V to Customer-Owned Facilities”

  • Numbered Document 063928, “Methods and Requirements for Installing Non-Residential Underground Electric Services 0−600 Volts to Customer-Owned Facilities”

1.16.2. Replacing Electric Facilities with Like-for-Like

Replacing service termination and metering equipment with new equipment of the exact same ampacity (e.g., 100 amps to 100 amps; 1,200 amps to 1,200 amps) and in the exact same location is considered a “like-for-like” replacement and typically is not considered an upgrade.

N OTE : Replacing a main or load breaker in an existing panel is not considered a panel replacement.

The following requirements apply to like-for-like panel replacements.

A. All new meter panels and their locations must meet Greenbook requirements and be approved by PG&E.

B. If the existing electric meter panel is fed from an overhead service and has an isolated cable termination compartment, separate from the meter socket compartment, the new meter panel must also have an isolated

                                               cable termination compartment. For example, see Section 6, Figure 6 6,

“ Typical Service Termination Enclosure, Combination Meter Socket

                                   -                                       Panel for a Class 320 Meter (Residential, 120/240 Volt, 226 Amp
             - ”

Through 320 Amp Service), on Page 6-10.

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Section 1, General

1.16.2. (continued)

C. If the existing electric meter panel is fed from an overhead service and does not have a cable termination compartment, then the panel may be replaced with a new panel that does not have an isolated cable termination compartment. See Section 6, Figure 6-5, “Combination Meter Socket Load Center,” on Page 6-9, for specific notes and requirements, and an allowed meter panel that does not have an isolated cable termination compartment. This type of panel may be replaced with one that has an isolated termination compartment.

the panel may be replaced with a new panel that does not have an isolated cable termination compartment. See Section 6, Figure 6-5, “Combination Meter Socket Load Center,” on Page 6-9, for specific notes and requirements, and an allowed meter panel that does not have an isolated cable termination compartment. This type of panel may be replaced with one that has an isolated termination compartment.

D. If the existing electric meter panel is fed from an underground service, the new meter panel must have an isolated cable termination compartment that is separated from the meter socket compartment. - “ For example, see Section 6, Figure 6 1, Typical Underground Service-Termination Enclosure, Combination Meter-Socket Panel

− ” (Residential, 0 Amps 225 Amps), on Page 6-5. New panels without an isolated termination compartment are not allowed.

E. New multimeter panels must be the same shape, layout, dimensions, and number of meter sockets as the existing multimeter panel to be considered a like-for-like replacement. If any of these items are not met, the panel replacement will be considered an upgrade and must meet the upgrade requirements in Subsection 1.16.1., “Upgrading Electric Facilities,” on Page 1-21.

F. The new service and metering equipment must be positioned so the existing PG&E service conductors can be terminated into the new panel lugs or studs. Wall-mounted junction boxes, underground splice boxes, or splicing on additional cable is prohibited and not allowed. The new equipment also must be positioned to ensure that clearances are not reduced to gas facilities (as shown in Section 2, Figure 2-19, “Electric and Gas Meter Set Separation Dimensions and Clearances,” on Page 2-33), water sources, or obstructions. If PG&E needs to install new service conductors or cables to perform the reconnect, the work and material is the applicant’s responsibility.

G. A like-for-like panel change may not have to meet the current Greenbook requirements unless worker safety, existing clearances, working space, or the panel location’s accessibility is reduced or compromised. PG&E will not energize meter panel installations if they do not meet PG&E requirements for safe working conditions. This is at PG&E’s discretion. The following are additional cases where the panel is not allowed to be replaced in the same location.

    - When structures (e.g., decks, remodeled buildings, planters) are

built over, under, or around the existing meter panel.

2022 – 2023 1-22

Section 1, General

1.16.2. (continued)

• When the existing meter panel is installed directly above or within 12 inches horizontally from the outside edges of the gas meter set. This includes installations where the gas or electric meters are inside cabinets. If one or both of the meters are in cabinets, the 12-inch clearance is from the outer edge of the cabinet. See Figure 1-3, “Panel Replacement Not Allowed when Over a Gas Meter Set,” below. Newly replaced meter panels are prohibited from being installed in the gray area.

Figure 1-3 Electric Panel Replacement Not Allowed When Over a PG&E SmartMeter Gas Meter Set

1.16.3. Relocating Electric Facilities

When existing electric facilities are relocated, applicants must meet all of the current Greenbook requirements. If PG&E’s existing service conductor can be used, as determined by PG&E, the panel must be positioned so the service conductor can be reconnected properly. The existing service conductor must be able to be reconnected either to the underground electric panel termination lugs or, for overhead services, to the external service-entrance conductors coming out of the weatherhead.

If PG&E needs to install additional service conductors or cables to perform the reconnect, the work and material is the applicant’s responsibility. PG&E does not accept cable-termination techniques using pin adaptors, cable ringing, or splicing on additional cable.

1-23 2022 – 2023

Section 1, General

1.16.3. (continued)

For additional information, see Section 5, “Electric Metering: General,” Subsection 5.3., “Electric Meters: General Location Requirements,” on Page 5-5.

1.16.4. Adding Power Generation

All customer-generating equipment connected either to the Company’s equipment or to customer equipment must conform to Company standards. This includes any applicable municipal, local, city, or federal rules and regulations, unless otherwise specified. Any distributed generation (DG) facilities, as well as backup generation installations, must meet the clearance requirements detailed in the Greenbook . This includes all clearance requirements from gas facilities.

Examples of DG and backup generation facilities include, but are not limited to, renewable sources such as solar, wind, water power, and farm waste, as well as nonrenewable energy sources such as natural gas or other fossil fuels for conventional engines, turbines, and fuel cells.

1.17. Standard Electric Service Voltage and Load Limitations

This section clarifies PG&E’s voltage requirements when applicants design services for single-family residential homes, duplex homes, town homes, condominiums, apartment buildings, or commercial (nonresidential) buildings.

1.17.1. Single-Phase Service

Unless an applicant qualifies for a three-phase service, the service voltage for a residential building or structure typically is 120/240 V, single phase, where the size of any single motor does not exceed 7.5 horsepower.

For any single-phase service, the maximum demand as determined by PG&E is limited to the capability of a 100-kVA transformer. If the load requires a transformer installation in excess of 100 kVA, the service will be three phase.

PG&E will not supply 120/208 V, single-phase service to residential structures or buildings unless both of the following conditions are met.

A. A 120/208 V secondary system is established near the location where the requested service would be supplied.

B. The rating of the disconnecting means (i.e., the main switch or main disconnect) or of the service entrance does not exceed 225 amperes.

1.17.2. Three-Phase Service

If PG&E determines that a single residential or nonresidential building or structure justifies a 75-kVA transformer at 120/208 V, or a 5 horsepower or larger motor at 120/240 V for an overhead service, then installing three-phase service is an option for the applicant. This option also is available for underground services with a 75-kVA transformer at 120/208 V, or a 10 horsepower or larger motor at 120/240 V.

2022 – 2023 1-24

Section 1, General

1.17.2. (continued)

This applies whether the applicant plans to wire the individual residential units in a single-phase or a three-phase configuration. Applicants requesting the three-phase option must provide space on the property for PG&E to install a dedicated transformer. For more information, see Electric Rule 2 .

If, based solely on PG&E’s estimation, the electric service demand is greater than that which can be supplied by a single-phase, 100-kVA transformer, then PG&E must supply three-phase service.

Other load limitations and requirements used to determine qualification for three-phase service are contained in PG&E’s Electric Rule 2 .

Three-phase service is available in 208Y/120, 240/120, or 480Y/277 voltages. The appropriate voltage depends on the minimum load requirements and the maximum demand load permitted by PG&E’s Electric Rule 2 .

1.17.3. Mixed-Use Projects

Mixed-use projects include both residential and nonresidential loads. When designing a mixed-use project where the use occurs in separate buildings, ensure that each facility is supplied by a separate transformer. This means that a single-phase transformer could supply the residential units(s) and three-phase transformer could supply the nonresidential unit(s).

If the mixed use occurs in the same building, a single transformer typically is installed to supply the building. The size and selection of the transformer is based solely on PG&E’s estimated demand load . The applicant must provide space on the property for PG&E to install a dedicated transformer.

In some cases, PG&E may determine that the residential and nonresidential loads must be supplied by separate transformers and service facilities, including meters and metering facilities. PG&E makes this determination based on the nature or anticipated operation of the nonresidential loads and how they may affect the services. The applicant must provide space for those service facilities on the property.

Again, when developing mixed-use projects, the applicant must communicate and work closely with PG&E early in the design phase .

1.18. Wholesale Distribution Tariff (WDT) Interconnections

WDT customers requesting primary service interconnections should refer to Numbered Document 092816, “Wholesale Distribution Tariff (WDT) Interconnection Design Options for Primary Voltage Service,” located in and consult with your local service planning office.

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Section 1, General

1.19. Harmful Wave Form

As described in Electric Rule 2, customers must not operate equipment that either superimposes a current of any frequency or wave form on PG&E’s system, or draws current from PG&E’s system of a harmful wave form. Harmful wave forms cause interference with PG&E’s operations, or with service to other customers, or cause inductive interference to communication facilities.

Also, any customer who operates or plans to operate any equipment that creates intolerable voltage fluctuations, generates waveform harmonic distortion, or otherwise causes intolerable service interference, must limit such interference or restrict the use of such equipment on PG&E’s request.

Harmonic distortion is a growing power-quality concern on PG&E’s distribution circuits. Therefore, PG&E will adopt the Institute of Electrical and Electronics Engineers (IEEE) Standard 519, “Harmonic Control in Electric Power Systems.” PG&E will require that the harmonic current drawn by customer’s equipment of any kind be in conformity with the IEEE Standard 519. Customer equipment types include, but are not limited to, Variable Frequency Drive (VFD) motor controllers. These harmonic distortion limits reduce the potential negative effects to customers and PG&E distribution system equipment.

As explained in Electric Rule 2, customers may be required to install protection against the adverse effects of harmonics resulting from their equipment. Customers can reduce harmonic current by installing harmonic filters or upgrading to equipment with a low-harmonic output.

2022 – 2023 1-26

Section 2

Gas Service

2.1. Scope

This section of the manual covers general gas service and gas meter-set requirements for residential and nonresidential installations.

USA

WARNING

T O AVOID POTENTIAL ACCIDENTS, DO NOT BEGIN TO

EXCAVATE BEFORE IDENTIFYING UNDERGROUND FACILITIES .

State law requires applicants to contact Underground Service Alert (USA) by dialing 811 at least 2 working days before excavation (weekends and holidays excluded). Ensure that you call USA when planning underground work, before digging begins, to allow adequate time for USA to determine the location of underground gas and electric lines or equipment. The potential for an accident exists if applicants fail to request USA to identify underground utility facilities before they begin excavating. For safety, workers must dig by hand when digging within 2 feet of distribution lines and 10 feet of gas transmission lines.

First, the applicant must mark the excavation area with white paint. Then, USA arranges for participating companies to mark the locations of their underground facilities at the jobsite. This is a free service . See the USA color-code identifiers in Table 1-1, “USA Color Coding,” on Page 1-1, and on the back of this manual.

Additional information is available at http://www.pge.com/digsafely. Find USA services at the USA North website (http://www.usanorth.org). USA is a locating service for excavation only. Do not use USA for design purposes.

Dig Safely

2.2. Procedures for Establishing Gas Service

2.2.1. Establishing New Gas Service

Applicants must follow the steps described below to establish new gas service.

A. Applicant’s Planning Stage

When planning to establish new gas service, applicants must:

1. Fill out and submit the appropriate PG&E application. Refer to Subsection 1.3., “Applying for Building and Renovation Services,” on Page 1-5, for more information about the application requirements.

2. Contact their local PG&E project coordinators as early in the planning stage as possible.

N OTE : See Table FM-1, “Service Planning Office and Inspection Desk

Contact Information,” at the front of this manual starting on Page iv, for specific contact numbers listed by area.

2-1 2022 – 2023

Section 2, Gas Service

2.2.1. (continued)

B. Working With PG&E

After initially contacting PG&E about installing new gas service, applicants must:

1. Provide detailed site improvement plans indicating property lines, roads, sidewalks, and driveways, as well as the locations of other site infrastructure elements such as, but not limited to, water services, sewer line, water drainage, bioswales, and retaining walls. For individual parcels/single buildings, include the proposed locations of gas and electric meters, building elevations, and proposed future improvements. Ensure that the written details for required clearances in meter set assemblies are also included in the drawing. (Meter locations are subject to PG&E approval.)

2. Submit details about the type(s) of gas appliances being installed per meter. Include the connected load breakdown in thousand British Thermal Units (MBTU) per hour for each appliance and its intended use.

3. Applicants requesting above-standard delivery pressure (7 inches of water column) typically are required to submit a written justification for PG&E’s review and approval. Standard delivery pressure is approximately 1/4 pounds per square inch gauge (psig). See Subsection 2.4.1., “Gas Pressure,” on Page 2-18, for more requirements.

4. Applicants can choose either PG&E or an outside company to design and/or install their services. PG&E provides the applicant with a bid for service design and installation costs. Specific conditions must be met whether the applicant chooses PG&E or an outside company to work on the project.

5. When PG&E utilities are in a trench with other utilities, see PG&E

Standard S5453, “Joint Trench” (located in Appendix B, “Electric and Gas Service Documents”), Exhibit A, “Joint Trench Drawing,” and Form B, “Job Estimate Authorization for Joint Trench Construction.” Use the information in both exhibits when PG&E facilities are in a trench with other utilities.

Contact your local project coordinator for copies of these documents. See Table FM-1 in the front of the manual on Page iv.

Information about service design and installation options is available either on Gas Form 79-716, “General Terms and Conditions for Gas and Electric Extension and Service

Construction by Applicant,” or by calling PG&E’s Building and Renovation Service Center (BRSC) at 877-743-7782.

2022 – 2023 2-2

2.2.1. (continued)

Section 2, Gas Service

6. Obtain approval from PG&E’s project coordinators for the gas service and meter-set location. If the new gas service request is complex, PG&E may require that estimators and/or engineers become involved before approving the gas service and meter-set location.

7. Select a trenching agent to perform the required trenching and paving services. The trenching agent also must obtain all the permits required for installing the gas service pipe from the point of connection at the main to the approved meter location. Applicants can select either PG&E or an outside contractor to perform this work.

If an applicant selects an outside trenching agent for the project, the applicant must obtain a copy of PG&E’s approved trench route or construction sketch. PG&E must inspect and approve any trenching and paving work performed by outside agents.

Outside trenching agents are required to be certified to perform work on the gas pipeline systems. For a complete list of tasks requiring certification, see the Operator Qualification Program Requirements or contact a PG&E project coordinator.

Outside trenching agents can be certified by scheduling a testing session directly with PG&E by calling 1-855-854-6227 (Option 4), or by emailing QualificationCommun@pge.com.

PG&E does not accept or assume ownership of additional facilities installed where the applicant begins construction before the design is completed and approved by PG&E . Additional facilities, even if provided at no cost to PG&E, represent increased plant in the rate base. This includes associated, long-term increases in taxes and maintenance expenses.

Applicants are responsible for any additional design changes or reconstruction costs that may be required if PG&E does not accept unapproved facilities. PG&E will not pressurize a system that has not received final design approval and passed all inspections.

8. Pay PG&E for all the installation costs. This includes the costs for facilities and appurtenant fittings, valves, service pipe, service regulators, metering equipment, etc., in excess of the allowances. For more information, see PG&E’s Gas Rule 15, “Gas Main Extensions,” Section B, “Installation Responsibilities,” and Gas Rule 16 , “Gas Service Extensions,” Section E, “Allowances and Payments by Applicant.”

ffbook/GAS_RULES_15.pdf)_, “Gas Main Extensions,” Section B, “Installation Responsibilities,” and Gas Rule 16 , “Gas Service Extensions,” Section E, “Allowances and Payments by Applicant.”

9. Install, own, and maintain physical protection such as bollards or barrier posts and/or enclosures, as may be required.

2-3 2022 – 2023

Gas App.

Section 2, Gas Service

2.2.1. (continued)

C. Complying with Local Building Laws and Regulations

Applicants must contact local city and county deputies and inspectors to ensure compliance with all local laws and regulations. Applicants must:

1. Allow only qualified professionals to install applicant-owned facilities. Also, applicants must ensure that equipment required by local building codes are inspected by local building inspectors.

2. Complete the required inspections on applicant-installed gas piping (e.g., houselines) and equipment (e.g., valves, appliances) before scheduling meter-set work with PG&E.

2.2.2. Relocating or Adding Load to an Existing Service

An applicant should contact PG&E as early as possible when there are plans to remodel that require relocating an existing gas service to a different, acceptable location or when adding gas load. Applicants are required to fill out and submit to PG&E Gas Form 62-0687, “Application for Service–Existing Service Relocate/Change Service.” This form is located on pge.com at

− https://www.pge.com/tariffs/assets/pdf/tariffbook/GAS_FORMS_62 0687.pdf

This form, along with additional information about building and renovation services, also is found at http://www.pge.com/building/. The form requires applicants to provide the following information.

  - **Project Type:** Asks the reason for the relocation/rearrangement.

  - **Project Information:** Asks specific information about the project

location and applicant.

  - **Contract Information:** Asks for the applicant’s legal name, mailing

address, etc.

  - **Representative Information:** If the applicant has a legal

representative to relay project information and updates to the PG&E representative, the legal representative’s name goes here.

  - **Construction Information:** Describes the applicant’s choices for

trenching and backfill work.

  - **Load Information:** Asks for the number of existing meters at each

service location. Provide details about the quantity and types of existing gas appliances and details of those being added. Include the connected load breakdown in thousand British Thermal Units (MBTU) per hour for each appliance. Also include a description of each appliance’s intended

use.

• Self-Generation and Net Metering Options: Describes the requirements to apply for PG&E’s net metering program.

  - **Attachments:** Lists the documents required for the application including
  

site improvement plans, drawings, and maps.

  - **Agreement to Pay and Signature:** Applicants must sign the agreement

and pay any fees associated with the work.

2022 – 2023 2-4

Section 2, Gas Service

2.2.2. (continued)

N OTE : Adding load may cause the existing service to become inadequate and may require the service to be upgraded and/or replaced at the applicant’s expense. (See Gas Rule 16 .)

Applicants can choose to provide trenching for gas services relocations. PG&E Gas Form 62-0687 describes these options in greater detail.

2.3. Gas Service

All plastic gas distribution service pipes and stub completions must be a minimum diameter of 1 inch for all new business installations and customer-requested service relocations.

2.3.1. General

A gas service is the section of plastic tubing or steel pipe that connects the service riser and gas meter to PG&E’s gas distribution main. The gas distribution main is preferably located in an easement adjacent to the applicant being served. For an example, see Figure 2-1, “Typical Gas Service Installation,” on Page 2-6.

Applicants should install the gas distribution mains in joint trenches, when it is feasible to do so. Locate distribution mains 5 feet from the face or

                                            [foundation of any building as described in Gas Design Standard A](https://www.pge.com/pge_global/common/pdfs/services/building-and-renovation/greenbook-manual-online/a-04.pdf) 04,

“Cover and Clearance Requirements for Transmission Lines, Distribution Mains, and Service Lines,” located in Appendix C, “Electric and Gas Engineering Documents.” On private property, ensure that easements are at least 10 feet wide for mains. Services that cross third-party property also require a 10-foot-wide easement.

A financial allowance for the installed service cost is based on the applicable, connected gas appliances installed within a specific time period. The allowance is applied toward the cost of a new service, as outlined in PG&E Gas Rule 16, Section E.

A. When installing a gas service, PG&E performs the following actions.

N OTE : While it is PG&E’s responsibility to design and install the gas service, the applicant has the option to perform both.

1. PG&E installs a service extension and applies the gas rule allowances, based on applicant load, to the applicant under the following conditions:

a. PG&E determines that the loads to be served are bona fide.

b. The loads are connected and the extension placed into service subject to compliance with Gas Rule 15 and Gas Rule 16 .

2. Design the PG&E-approved gas service to the shortest and most practical route, preferably in a straight line at a right angle from the gas main to an approved meter location. Avoid offsets, diagonal runs, bends, and services installed under driveways or customer-paved areas. Exceptions require PG&E’s advance approval . When the building or structure is on a corner lot, PG&E determines the gas main for connection.

2-5 2022 – 2023

Section 2, Gas Service

2.3.1. (continued)

3. Install and connect the gas service to the gas main in the adjoining street, highway, alley, lane, road, or easement.

Gas Service Riser

Gas Service Pipe

Gas Distribution Main

Street or Roadway

Figure 2-1 Typical Gas Service Installation

4. Refer to Gas Design Standard A-93.3, “Excess Flow Valves,”

located in Appendix C.

5. Refer to Subsection 2.3.3., “Curb Values,” on Page 2-10, if a curb valve is required.

6. Do not install gas services under or through retaining structures (e.g., retaining walls) greater than 3 feet above ground.

N OTE : A retaining wall is a structure that retains (i.e., holds back) material (usually earth) and prevents it from sliding or eroding away. Retaining walls are designed to resist the pressure of the material being held back.

B. PG&E does not permit the following types of installations.

1. Installing gas service under or through structures, buildings, foundations, or decks. On an exception basis, PG&E may approve a gas service riser in a gas meter room that meets the requirements in Gas Design Standard J-16, “Gas Meter Room,” located in Appendix C.

N OTE: If PG&E determines that an applicant’s uninspected trench excavation requires repair, or if the uninspected trench is backfilled and/or paved over, the applicant must provide and pay for all of the paving services and permits that are required to get an inspection and repair the trench excavation completely. This includes trenches dug on both public and private property.

2022 – 2023 2-6

2.3.1. (continued)

Section 2, Gas Service

2. Installing gas service and gas service risers directly into concrete or asphalt pavement materials.

3. Installing gas service risers that are not approved by PG&E.

C. When installing a gas service, the applicant is responsible for ensuring the following conditions are met.

N OTE: Applicants must refer to PG&E Gas Form 79-716 when they propose installing new gas services for new business utility services. This form is located on the Tariffs website on pge.com at https://www.pge.com/tariffs/index.page.

1. Provide and maintain a clear route, free of any obstructions, for installing the gas service facilities.

2. Trench, backfill, and perform any other digging as described in PG&E’s specification and inspection instructions, as required.

3. Pay any required permit fees.

4. Install and maintain all of the gas piping downstream of the service delivery point. See Subsection 2.5., “Applicant-Owned and Installed Gas-Service Piping (e.g., Houseline), Valves, and Automatic Shut-Off Devices,” on Page 2-49, for more information.

5. Ensure that all requirements are met in the following PG&E gas design standards, located in Appendix C.

6. Notify PG&E as soon as any paving activity is planned and provide PG&E with the scheduled completion date. Applicants should remember that PG&E can meet their schedules when the Company is notified early in the process.

7. PG&E must approve all requests for gas service in a casing before installation. Provide and install an approved casing (i.e., sleeve) under the paving material when the paving will extend over the gas service. Applicants must ensure that:

a. The casing is made of a PG&E-approved material. Refer to

Gas Design Standard A-75, located in Appendix C.

b. PG&E employees and equipment have sufficient, safe, and unobstructed access to the casing location with sufficient space to perform any required work when installing in a joint trench.

c. Before installing any type of pavement or concrete, place a minimum 3-inch sleeve around the gas service riser.

2-7 2022 – 2023

Section 2, Gas Service

2.3.1. (continued)

8. PG&E Procedure TD-4632P-01, “Gas and Electric Operations −

Cross Bore Prevention and Mitigation,” provides the steps that must be taken to prevent, inspect, identify, report, and address cross bores that are created when PG&E, its contractors, and contracting agencies perform trenchless construction. All construction work performed by or for PG&E is subject to this procedure.

N OTE : Find additional information about cross bores at the Sewer

Cleaning website: https://www.pge.com/en_US/safety/gas−safety/sewer−clean ing−safety.page

D. For more information and illustrations, see Company Standard S5453,

Exhibit B, Joint Trench Configurations & Occupancy Guide, located in Appendix B.

E. Underground warning tape is required for all gas service and main pipeline installations as described in Gas Design Standard L-16, “Gas Pipeline Underground Warning Tape,” located in Appendix C.

F. Figure 2-2, “Gas-Only Service Trench;” Figure 2-3, “Typical Gas Bell Hole−Plan View;” and Figure 2-4, “Typical Bell Hole Depth−Profile View,” show the typical, PG&E-required excavation for a gas-only service trench and gas bell hole. All three figures are located on - “ Page 2-9. See Gas Design Standard A 03, Gas Trench Design and Construction,” located in Appendix C, for gas-only service trenching requirements.

2022 – 2023 2-8

Section 2, Gas Service

2.3.1. (continued)

Finished Grade ÏÏÏÏ

ÎÎÎ

Figure 2-2 Gas-Only Service Trench

ÏÏÏÏÏÏ Finish Grade

ÏÏÏÏÏÏÏÏÏÏÏ

Ï ÏÏÏÏÏÏÏÏÏ Ï

Ï ÏÏÏÏÏÏÏÏÏ Ï

ÏÏÏÏÏÏÏÏÏÏÏ

(4’ Length x 4’ Width, Plastic Pipe) (5’ Length x 4’ Width, Steel Pipe)

Figure 2-3 Typical Gas Bell Hole−Plan View

ÎÎÎÎÎ

Figure 2-4 Typical Bell Hole Depth−Profile View

Notes in reference to Figure 2-2, Figure 2-3, and Figure 2-4.

1. All dimensions are the minimum required amounts.

2. For Figure 2-2, “Gas-Only Service Trench,” soil compaction must meet PG&E’s and any applicable federal, state, county, and local requirements.

3. Some jobs may require bell holes with larger dimensions and trench shoring.

2-9 2022 – 2023

Section 2, Gas Service

2.3.2. Branch Service Pipe

Branching may be used to provide service to no more than two buildings. The meter installations must be located on adjacent sides of the two buildings being served. Where a branch-service installation is justified, a separate location for the gas meter and electric meter is permissible, if necessary.

Design and install all branch services as described in Gas Design Standard A-42, “Standard Branch Service Installation,” and Gas Design Standard A-90, both located in Appendix C.

2.3.3. Curb Valves

A. A curb shutoff valve is required to be installed when any of the following conditions exist:

1. The meter capacity exceeds 5,000 standard cubic feet per hour, and an EFV is not required and not installed. Refer to Gas Design Standard A-93.3, located in Appendix C, for EFV requirements.

2. The shutoff valve is not readily accessible or is inside a building and the service shutoff valve is enclosed (e.g., basement, garage, or similar obstructed location).

3. An EFV is not required and not installed, and the service line cannot be quickly squeezed off because of wall-to-wall paving, concrete, depth of cover, or other surface conditions. This includes known, planned depth of cover or other surface conditions. Typically, a service line that is installed in a lawn area with normal soil conditions (i.e., no wall-to-wall paving, concrete, or other obstruction over the service line) may be quickly squeezed off.

B. PG&E requires curb valves when the service line supplies a building where approximately 100 or more people gather and where the occupancy may be transient (see Gas Design Standard A-43.2, “Curb Valves”). Examples include, but are not limited to:

   - Schools

   - Hospitals

   - Churches

   - Places of incarceration

   - Theaters

   - Auditoriums

   - Arenas

   - Transit centers

2022 – 2023 2-10

Section 2, Gas Service

2.3.3. (continued)

C. PG&E may require valves on small, gas-distribution systems. These systems include, but are not limited to:

    - Mobile home parks ( _**not**_ individual mobile homes)

    - Condominiums and apartments

    - Multiple buildings

    - Shopping centers

    - Commercial/industrial parks

2.3.4. Joint Utility Service Trenches

When installing underground electric service, PG&E’s gas service usually is installed in a common joint trench with the electric service. The joint trench typically includes telephone and cable television facilities. No other utilities or wiring are allowed in a joint trench (e.g., water, sewer, private wires, or facilities not a member of Underground Service Alert). See the definition for “Non-Utility” in Appendix A, “Acronyms and Glossary.”

When planning to install joint-trench, allow for additional lead time to design and engineer the joint trench. Applicants must be aware of the following requirements.

1. Both a Joint Trench Composite Drawing and Form B, “Job

Estimate Authorization for Joint Trench Construction,” are required when PG&E facilities are located in a trench with other utilities.

2. Applicants either must submit joint trench drawings to PG&E for review, or PG&E can prepare joint trench drawings for applicants at their expense.

3. PG&E must approve the trench’s design details before trenching begins and facilities are installed.

4. Figure 2-5, on Page 2-12, shows the layout of a “Typical Joint-Service Trench.”

Separation and clearance details for joint utility service trenches are located in Table 2-1, “Minimum Separation and Clearance Requirements for Trenches,” on Page 2-13.

2-11 2022 – 2023

Section 2, Gas Service

2.3.4. (continued)

Notes in reference to Figure 2-5.

Figure 2-5 Typical Joint-Service Trench

• Increase depth to 30” in the Franchise area.

1. Trench depth varies depending on the occupant’s facility allotment.

2. Soil compaction must meet PG&E’s, and any applicable federal, state, county, and local requirements.

3. A joint service trench must meet all separation and clearance dimensions shown in Table 2-1, “Minimum Separation and Clearance Requirements for Trenches,” on Page 2-13.

4. For more information on Figure 2-5, see PG&E’s Joint Trench Configurations & Occupancy Guide, located in Appendix B.

2022 – 2023 2-12

Section 2, Gas Service

2.3.4. (continued)

Table 2-1 Minimum Separation and Clearance Requirements for Trenches [1]

1 All separation clearance distances are in inches. 2 For more information about this table, see” Company Bulletin TD-5453B-002, “Updated Separation Requirements For Conduit in Joint Trench. located in Appendix B. 3 Streetlight circuits not owned by PG&E must be installed to meet the requirements in PG&E’s Joint Trench Configurations & Occupancy Guide . Specifically, applicants must review the requirements for working with a second utility company. 4 Considered a “utility” as defined in Utility Standard S5453, “Joint Trench.”

PG&E does not differentiate between the clearances for casing/conduit and pipe. The clearances and installation requirements are the same.

For more information on backfill-sand requirements, see Engineering Material Specification EMS-4123, “Backfill Sand,” located in Appendix B.

For more information on the minimum separation and clearance requirements for service trenches, see the Joint Trench Configurations & Occupancy Guide .

When different service facilities (e.g., gas, electric, telecommunications) are installed in close proximity (e.g., in a joint trench), applicants must ensure that the facilities maintain a minimum horizontal separation of 36 inches from the gas riser where they transition from below ground to above ground. See Figure 2-19, “Electric and Gas Meter Set Separation Dimensions and Clearances,” on Page 2-33.

ifferent service facilities (e.g., gas, electric, telecommunications) are installed in close proximity (e.g., in a joint trench), applicants must ensure that the facilities maintain a minimum horizontal separation of 36 inches from the gas riser where they transition from below ground to above ground. See Figure 2-19, “Electric and Gas Meter Set Separation Dimensions and Clearances,” on Page 2-33.

Clearances between other facilities can be reduced only when the parties supplying those services or facilities reach a mutual agreement.

N OTE : Applicants must ensure that sufficient space is provided between facilities at all times to allow for safe maintenance and operation.

A. Applicants must not install any electrical devices or equipment including wires, cables, metering and telecommunication enclosures, bond wires, clamps, or ground rods within 36 inches of the gas service riser.

2-13 2022 – 2023

Section 2, Gas Service

2.3.4. (continued)

This distance can be reduced to 18 inches for electrical devices or equipment certified for National Electric Code (NEC) Class I, Division 2 locations. See Figure 2-19, “Electric and Gas Meter Set Separation Dimensions and Clearances,” on Page 2-33, and Figure 2-21, “Gas Regulator Set Clearance Requirement from Air-Intake and Exhaust Fans,” on Page 2-36.

B. Applicants must keep the area immediately behind gas meters, service facilities, and risers free and clear of all other facilities or equipment (i.e., pipes, building vents, or conduits). This requirement also applies to the area between those facilities and the premises or structure being served.

Before installing utility conduits or gas service piping, applicants must discuss the service arrangements and coordinate the final PG&E-approved meter locations and joint trench requirements with a PG&E project coordinator.

The joint trench composite drawing must include details of the sizes and quantities of all the equipment sharing the trench. PG&E inspectors must approve the trench after installation is complete.

Applicants must ensure that the gas and electric meters are installed according to Figure 2-19 on Page 2-33, providing the minimum separation clearances. Refer to the following sections of this manual for acceptable electric meter utility locations.

  - [Section 2, “Gas Service,” Subsection 2.4., “Set Requirements for Gas](https://ecmappwlsp01c2.comp.pge.com/TILVIEWER?chronicleId=09131aad80dfc687&vd=false&device=false)

Meters” (on Page 2-18)

  - [Section 5, “Electric Metering: General”](https://ecmappwlsp01c2.comp.pge.com/TILVIEWER?chronicleId=09131aad80e04aeb&vd=false&device=false)

  - [Section 6, “Electric Metering: Residential](https://ecmappwlsp01c2.comp.pge.com/TILVIEWER?chronicleId=09131aad80df9fc5&vd=false&device=false)

  - [Section 7, “Electric Metering: Nonresidential, Industrial, and](https://ecmappwlsp01c2.comp.pge.com/TILVIEWER?chronicleId=09131aad80e06c30&vd=false&device=false)

Agricultural”

Wet-utility piping or facilities are not permitted in a joint trench. Examples of wet utilities that are not allowed in a joint trench include the following:

  - Propane lines

  - Pressurized water lines

  - Sewer, sanitary, or storm drains

Both PG&E Standard S5453, Form B, “Job Estimate Authorization for Joint Trench Construction,” and the Joint Trench Configurations & Occupancy Guide , located in Appendix B, describe the requirements for separating a wet utility from a joint trench.

When applicants want to install facilities in a joint trench other than those listed in this section, PG&E requires a written request that includes a justification for the exception. Applicants must submit their requests to PG&E for review and approval before beginning work on a joint trench.

See Figure 2-19 on Page 2-33 for above-grade clearance requirements from the gas service riser where joint trench occupants terminate.

2022 – 2023 2-14

Section 2, Gas Service

2.3.5. Multiple Buildings Located on One Lot

A. Two Buildings Located on One Lot

1. PG&E may furnish a separate gas service to each building if it does not require an additional gas distribution main extension. Figure 2-6, “Separate Gas Services for Two Buildings on a Single Lot,” on Page 2-13, and Figure 2-7, “Separate Gas Services for Two Buildings on a Corner Lot,” on Page 2-16, show examples of two premises on one lot with separate gas services.

One or More Meters Grouped at This Location

PG&E-Owned Gas Service Pipe

One or More Meters Grouped at This Location

Gas Distribution Main

Street or Roadway

Figure 2-6 Separate Gas Services for Two Buildings on a Single Lot

2-15 2022 – 2023

Section 2, Gas Service

2.3.5. (continued)

Street or Right-of-Way

GasDistribution Main

Figure 2-7 Separate Gas Services for Two Buildings on a Corner Lot

2. When more than one gas meter is required to serve a single building, the meters for that building must be grouped at a common location that has been approved by PG&E. See Subsection 2.4.2.F., “Multiple Gas Meter Connection Requirements for Single and Double (Banked) Manifold Connections,” on Page 2-39, for grouping requirements when locations have multiple meters.

B. Three or More Buildings Located on One Lot

When two or more buildings, either single family or multifamily, are on the same lot and located in close proximity to each other, PG&E may install a gas distribution main on the applicants’ properties. For specific requirements, see PG&E’s main-extension rule, Gas Rule 15, and service-pipe extension rule, Gas Rule 16 . Before a gas distribution main can be installed, applicants must ensure that the following conditions are met.

1. There must be a protected and accessible location on the property.

2. A satisfactory right-of-way, easement, or permit must be available at no cost to PG&E.

Typically, PG&E installs a single, gas-service pipe to each building, as described in Gas Rule 16 .

2022 – 2023 2-16

2.3.5. (continued)

Meters

Section 2, Gas Service

6 Unit

Meters

Gas Distribution Main

Gas

Gas Distribution Main

Street or Roadway

Figure 2-8 Figure 2-9 Apartments With Grouped Meter Locations Individually Metered Buildings

Typical Gas Distribution Main and Service Pipe Installation for Property With Three or More Buildings

Multifamily residential complexes are subject to a California Public Utilities Commission (CPUC) mandate specifying that each unit is metered individually. Specifically, see Public Utilities Code Division 1, “Regulation of Public Utilities,” Part 1, “Public Utilities Act,” Chapter 4, “Regulation of Public Utilities,” Article 3, “Equipment, Practices, and Facilities,” Section 780.5 (on the Internet at http://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?secti onNum=780.5.&lawCode=PUC).

E XCEPTION: A single gas meter may serve an entire complex when the gas is used only for central heating systems (i.e., space, water) that supply all tenants in common, and when each individual unit does not use gas appliances that require combustion venting. Refer to Gas Rule 18, “Supply to Separate Premises and Submetering of Gas.”

When each dwelling unit includes ground-floor space, each unit may have an individual service pipe and separate meter location if :

1. Sufficient meter space is provided.

2. Local ordinances do not prohibit such arrangements.

When it is practical, install the gas service pipe in a joint trench with the electric service.

See Subsection 2.4.2.F. on Page 2-39 for specific requirements when locations have multiple meters.

2-17 2022 – 2023

Section 2, Gas Service

2.3.6. Mobile Home Parks

Gas mains and services in mobile home parks must meet the same standards for gas installations that are required for residential and nonresidential applications.

In addition, applicants must not install gas mains, services, and meters under existing or proposed structures including mobile homes, sheds, porches, carports, and stairs.

Applicants should install the gas distribution mains in the roadway, when it is practical to do so, and in joint trenches, when it is feasible. Locate distribution mains 5 feet from the face or foundation of any building as described in Gas Design Standard A-04 located in Appendix C. On private property, ensure that rights-of-way are at least 10 feet wide for mains and at least 5 feet wide for service piping. Only use easements for utility installations. Table 2-1 on Page 2-13 shows the minimum separation and clearance requirements for service trenches.

N OTE : Curb valves are not recommended for individual mobile home services; however, a curb valve may be installed on the service to a park’s community building.

N OTE : Refer to Gas Design Standard J-12.4, “Mobile Home/Manufactured

Home Meter Set Installation,” Contact your local project coordinator for this document.

Also see the gas meter set requirements in Subsection 2.4.2.A.4., “Mobile Home Parks,” on Page 2-23.

2.4. Set Requirements for Gas Meters

The following information describes the meter set requirements for gas services.

2.4.1. Gas Pressure

The following information describes the types of delivery pressures available with gas service.

A. Standard Delivery Pressure

PG&E typically will provide gas service pressure to the service delivery point at 7 inches of water column (WC). This is approximately 1/4 psig, as measured at the gas meter outlet.

B. Elevated Delivery Pressure

PG&E may be able to provide gas service at higher gas-delivery pressures, depending on the location of the applicant’s facility and on the requirements of the gas system serving that location. PG&E maintains sole authority to determine if the elevated delivery-pressure service is available at a specified location.

2022 – 2023 2-18

Section 2, Gas Service

2.4.1. (continued)

In all elevated delivery-pressure service situations, PG&E reserves the right to reduce the gas service pressure to standard delivery pressure, as outlined in Gas Rule 2, “Description of Service,” when:

• PG&E determines that the elevated gas pressure is no longer available.

    - The current delivery pressure is detrimental to PG&E’s gas
  

distribution system.

N OTE : When providing elevated gas-pressure service, PG&E can incur additional costs. In these cases, special facilities charges will apply as described in Gas Rule 2 . Applicants must pay these charges before PG&E can provide the services.

The following two numbered items describe cases where special facilities charges can apply.

1. For 2-psig Services: In many PG&E service territories with sufficient distribution operating pressure, 2-psig delivery pressure may be available. When completing PG&E’s Application for service process online form, applicants must request 2-psig gas-service delivery pressure in the “Load Information” section. Generally, there are no special facilities charges at or below 2 psig for meters equal to or less than 1,000 standard cubic feet per hour (scfh) nominal capacity. As mentioned previously, PG&E determines if special facilities charges apply.

2. For Services Higher Than 2 psig: Elevated gas-metering pressures higher than 2 psig may be available from the local gas distribution system. PG&E must ensure that tapping into this existing service will not be detrimental to the operation of that gas system.

When requesting elevated gas-service delivery pressure higher than 2 psig, applicants must follow these steps.

a. Contact the local PG&E project coordinator as soon as possible (preferably in the planning stage for a new or remodeled building).

b. Fill out the appropriate PG&E Application for service process

online form and note the gas-service delivery pressure being requested in the “Load Information” portion of the form.

c. Submit a formal, written request and justification for elevated gas-service delivery pressure (e.g., the hypothetical houseline diameter size at standard delivery pressure, the appliances’ specification requirements).

d. Submit a houseline piping schematic.

e. Submit the manufacturer’s appliance specifications to ensure that the appliances will operate as designed.

f. Provide detailed load information for all appliances and their intended use.

2-19 2022 – 2023

Section 2, Gas Service

2.4.1. (continued)

C. Back-Pressure Protection

PG&E may require the applicant to install a check valve after the PG&E gas meter’s set point of connection. This check valve prevents backflow. PG&E determines the need for check valves on a case-by-case basis. The applicant is required to have a maintenance plan and to maintain the check valve.

For all higher-than-standard delivery pressure, PG&E recommends that applicants hire a qualified person, such as plumber or contractor, to review the applicant-owned gas piping, venting, and appliance installations for the gas pressure service being requested. The qualified person can ensure that the installations comply with all local, state, and federal codes, standards, and regulations. Specifically, the qualified person helps to ensure that the Uniform Plumbing Code is enforced based on the installation requirements of the local governing agency in the applicant’s location.

2.4.2. Gas Meter-Set Locations

Typically, PG&E provides only one meter set (in an outside location) for each dwelling unit and one service to each building. PG&E may require that the meter be set at the property line if either of the following two conditions are met:

1. The building is back more than 200 feet from the property line.

2. A potential hazard or unusual site condition threatens the service between the property line and the building. Some examples of unusual site condition are plowed land, ditches, bridges, ponds, waterways, leach fields, bioswales, inaccessible security areas, or other deterrent, obstacle, or hazard.

PG&E prefers that rotary meter sets be located outside of and away from the building.

PG&E must have unrestricted, drive-up access for service trucks and adequate space to install and maintain the meter.

Any deviations require advanced approval from PG&E.

For specific information, see Gas Rule 16, Section C, Number 5, “Unusual Site Conditions.” Figure 2-10, “Property Line Installation,” below, shows a property-line meter set installation.

2022 – 2023 2-20

2.4.2. (continued)

Gas Service Pipe

Street or Roadway

Section 2, Gas Service

Gas Meter Location and Meter Protection Provided

Property Line

Gas Distribution Main

Figure 2-10 Property Line Installation

A. Descriptions of Acceptable Meter Locations

For descriptions of, and specific requirements for, acceptable gas meter - “ ” locations, see Gas Design Standard J 15, Gas Meter Locations, located in Appendix C.

Figure 2-11, “Acceptable Locations for Gas Meter Installations,” on Page 2-23, and Figure 2-12, “Acceptable Meter Locations for Mobile Home Parks,” on Page 2-24, illustrate locations that are acceptable for installing typical meter sets.

1. Required Access

PG&E employees require access to gas meter sets to perform inspection and maintenance activities. When gas meter locations are approved by PG&E and are installed in areas that are locked or can potentially be inaccessible, the applicant must allow PG&E employees access to the meters.

a. Use a lock box, provided by PG&E and installed by the applicant, to hold the applicant’s key. The lock box with key must be installed in a PG&E-approved location near the gas meter access point.

b. For gates, a double-lock device (e.g., hasp) may be required with one lock for the applicant and one lock for PG&E.

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Section 2, Gas Service

2.4.2. (continued)

2. Approved Meter Set Locations (In Order of Preference)

N OTE : For specific requirements and definitions, see Gas Design

Standard J-15, located in Appendix C.

a. Meter set located outside a building including property-line

meter sets.

b. Meter set located outside in an alcove as described in Subsection 2.4.2.G.1., “Alcoves,” on Page 2-41.

c. Enclosures as described in Subsection 2.4.2.G.2., “Enclosures,” on Page 2-42.

d. Meter set located in a cabinet or closet as described in Subsection 2.4.2.G.3., “General Requirements for Meter Cabinets,” on Page 2-43, and Subsection 2.4.2.G.4., “Gas Meter Closets,” on Page 2-45.

e. Meter set located in a breezeway. An acceptable breezeway is permanently open at both ends with no sources of ignition and no openings into the building.

N OTE : PG&E will consider approving Number f. and Number g., below, on an exception basis only after Number a. through Number e., above, are ruled out as options. Number f. and Number g., below, typically are limited to structures built up to the property line with space restrictions.

f. Meter set located inside a building in a gas meter room (see

Gas Design Standard J-16 located in Appendix C).

g. Meter set located in a buried vault, pit, or box.

2022 – 2023 2-22

2.4.2. (continued)

Section 2, Gas Service

3. Single Residential, Apartment, or Nonresidential Building

Rear Alley

G ate

Gate

Gas Distribution Main

Street or Roadway

Preferred Meter Locations

ÍÍÍÍÍÍ

ÍÍÍÍÍÍ

Non-Preferred Meter Locations

Figure 2-11 Acceptable Locations for Gas Meter Installations

N OTE: When the meter set from the gas distribution line is located in a rear alley, applicants should locate the meter set outside of any gated or fenced area. This allows access for PG&E employees when maintenance is required.

4. Mobile Home Parks

For new mobile home parks, the mobile home park owner or operator must provide a separate and independent meter location for each lot. New mobile home parks are not allowed to have submetering facilities.

Typically, meters are located on flat surfaces that are not obstructed by landscaping. Meter locations cannot be obstructed by porches and stairs leading to porches. Figure 2-12, on Page 2-24, represents several acceptable meter locations within a typical mobile home park.

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Section 2, Gas Service

2.4.2. (continued)

Distribution

Porch

Figure 2-12 Acceptable Meter Locations for Mobile Home Parks

Garage

Patio

Porch

PG&E does not provide metering facilities if they will be attached directly to a “movable” mobile home unit that is installed or set up in any location, including a mobile home park. Before PG&E provides metering facilities, the mobile home must meet both of the following conditions.

a. Fixed in Place: The mobile home typically does not have either running gear or wheels and is not capable of being moved to another location.

b. Installed on a Foundation System: The mobile home must have a foundation system as described on the California Department of Housing and Community Development website. From the Home page, click Manufactured & Mobilehomes. Then from the drop down, click Mobilehome Parks. Finally, click Laws and Regulations.)

This section says that if a mobile home park contains lots or site spaces that are set up to accommodate “movable” mobile home units, PG&E will install and supply the park using utility-approved service and metering facilities at a fixed location other than the mobile home. In these cases, applicants are responsible for connecting their mobile home units to those fixed metering facilities.

2022 – 2023 2-24

Section 2, Gas Service

2.4.2. (continued)

5. Subsidence Areas

In subsidence areas, the acceptable location requirements are the same as the requirements outlined in Subsection 2.4.2.A., “Descriptions of Acceptable Meter Locations,” on Page 2-21. PG&E may require a flexible connector to be installed between the gas meter outlet and the houseline. These connectors may require additional clearance space. See Figure 2-13, “Flex-Hose Meter Set−Residential and Small Commercial,” located below, for a sample installation. Contact your local project coordinator for Gas Design Standard J-58, “Flex Hose Meter Set Installation,” which provides information about diaphragm and rotary meters in subsidence areas.

Service Tee Owned and Installed by PG&E

Precast Concrete Pad 12” x 12” x 3”

Figure 2-13 Flex-Hose Meter Set–Residential and Small Commercial

Notes in reference to Figure 2-13.

1. Hoses have a minimum bending radius (R) based on the projected settlement of the ground and on the size of the hose.

B. Unacceptable Meter Locations

For new or remodeled buildings, do not locate gas meter sets in the following areas.

1. In curb meter boxes or vaults. (Only allowed as an option of last resort.)

2. In living quarters, closets, toilet rooms, or bathrooms.

3. Under stairs inside or outside.

4. In garages without properly vented meter cabinets.

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Section 2, Gas Service

2.4.2. (continued)

5. Behind fences. (This is not preferred, but on an exception basis may be allowed.) See Subsection 2.4.2.A.1., “Required Access,” on Page 2-21.

6. On steep slopes.

7. In areas where landscaping restricts access.

8. Within engine, boiler, heater, or electrical-equipment rooms.

9. Under display platforms or show windows in commercial buildings. (This includes any permanent, elevated display floors or platforms associated with the window where the purpose of the window is to present a display to the public.)

10. In contact with the soil, in a depression below general ground level, or where potentially corrosive materials are likely to contact the meter set.

11. In tradesman alleys (i.e., passageway in a building with a door at one end). Meters may be in a tradesman alley when in a vapor-proof cabinet that is vented to the outside and clear of sources of ignition.

12. In crawl spaces under buildings or decks.

13. Near a driveway, drive-thru, or other-traveled area.

14. In a metallic cabinet, room, or location that blocks or interferes with the radio frequency signal transmissions that are necessary for PG&E to operate its SmartMeter™ Advanced Meter Reading system.

15. In any location that does not provide the required clear and level work space. The height dimension is 6 feet, 6 inches of clearance above ground, 1 foot on each side of the meter facilities, and the depth dimension is 3 feet of clearance in front of the gas meter. See the figures in Subsection 2.4.2.C., “Single Gas Meter Connection Requirements,” below, for the different width dimensions.

N OTE : All meter locations are subject to PG&E approval.

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Section 2, Gas Service

2.4.2. (continued)

C. Single Gas Meter Connection Requirements

The figures beginning on Page 2-28 illustrate typical meter-set dimensions and working clearance requirements based on the total diversified loads and stated delivery pressure.

N OTE : The actual meter-set configuration, including the dimensions, may be different depending on field conditions and restrictions.

Consult with your local project coordinator for the exact meter location and houseline placement and orientation. Customer-installed equipment (e.g., earthquake valves) must be installed on customer houseline and cannot reduce the minimum riser-to-houseline dimension.

A commercial meter set may require the riser to be located farther away from the face of the building to accommodate the meter’s installation. Your local project coordinator can verify that risers and houselines are installed and meet all minimum clearance requirements before scheduling the meter set installation.

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Section 2, Gas Service

2.4.2. (continued)

1. Figure 2-14 represents a typical gas meter kit with 0 through 350 scfh at 7 inches WC or 0 through 600 scfh at 2 psig. Reverse sets are not allowed. The houseline must be to the right of the gas service riser.

12” 24” 12”

Top View

Figure 2-14

Typical Residential Gas Meter Connection

2022 – 2023 2-28

2.4.2. (continued)

Section 2, Gas Service

2. Figure 2-15 represents a typical gas meter kit with 351 through 1,400 scfh at 7 inches WC or 601 through 2,400 scfh at 2 psig. Reverse sets are not allowed for 400 through 600 class meters (i.e., 400, 425, 630). The houseline must be to the right of the gas service riser.

12” 30” 12”

Top View

Figure 2-15 Typical Gas Meter Connection for 400 to 1,000 Class Meters

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Section 2, Gas Service

2.4.2. (continued)

3. Figure 2-16 represents a rotary gas meter with 1,401 through 3,000 scfh at an approved delivery pressure.

Detail A

Face Flange ANSI 150

52” Min.
See Note 6
12”
10’ See
Detail A
36”
Meter Set
32”
15”
6”
6”
Finished
Grade

Enclosure Requirements

Figure 2-16 Gas Meter Connection Using a 1.5M or 3M Rotary Gas Meter

Notes in reference to Figure 2-16.

1. Customers must provide a 40 inches x 36 inches x 4 inches concrete pad with minimum #4 rebar.

2. Customers must provide a 2-inch ANSI 150 flat face flange to connect to PG&E facilities.

3. If the meter set is built next to a building wall, place the vertical leg of the riser and the houseline 20 inches from the wall. This ensures that the meter set components are built in a straight line.

4. The finished grade must be below the bury-line marking on the service riser.

5. PG&E’s weld elbow is optional.

6. The regulator vent must not terminate near any sources of ignition or openings into the building. The riser must be a minimum of 36 inches from sources of ignition, from any openings into the building, or any wet facility. This clearance area extends 10 feet above the highest regulator vent, 36 inches below the lowest regulator vent, and 12 inches beyond the farthest PG&E meter-set equipment.

2022 – 2023 2-30

Section 2, Gas Service

2.4.2. (continued) 4. Figure 2-17 represents a rotary gas meter with 3,001 through 7,000 scfh at an approved delivery pressure.

0”

Detail A

3” Flat Face Flange ANSI 150

12’

0”

Enclosure Requirements

Figure 2-17 Gas Meter Connection Using a 5M or 7M Rotary Gas Meter

Notes in reference to Figure 2-17.

1. Customers must provide a 78-inches x 36-inches x 4-inches concrete pad with minimum #4 rebar.

2. Customers must provide a 3-inch ANSI 150 flat-face flange to connect to PG&E facilities.

3. If the meter set is built next to a building wall, place the vertical leg of the riser and the houseline 20 inches away from the wall. This is to ensure the meter set components are built in a straight line.

4. The finished grade must be below the bury-line marking on the service riser.

5. PG&E’s weld elbow is optional.

6. The regulator vent must not terminate near any sources of ignition or openings into the building. The riser must be a minimum distance of 36 inches from sources of ignition and openings into the building, or any wet facility. This clearance area extends 10 feet above the highest regulator vent, 36 inches below the lowest regulator vent, and 12 inches beyond the farthest PG&E meter-set equipment.

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Section 2, Gas Service

2.4.2. (continued) 5. Figure 2-18 represents a rotary gas meter with 7,001 through 16,000 scfh at an approved delivery pressure.

Enclosure Requirements

Figure 2-18 Gas Meter Connection Using an 11M or 16M Rotary Gas Meter

Notes in reference to Figure 2-18.

1. Customers must provide a 96-inch x 36-inch x 4-inch concrete pad with minimum #4 rebar.

2. Customers must provide a 4-inch ANSI 150 flat−face flange to connect to PG&E facilities.

3. If the meter set is built next to a building wall, place the vertical leg of the riser and the houseline 20-inches minimum away from the wall. This ensures the meter set components are built in a straight line.

4. The finished grade must be below the bury-line marking on the service riser.

5. PG&E’s weld elbow is optional.

6. The regulator vent must not terminate near any sources of ignition or openings into the building. The riser must be a minimum distance of 36 inches from sources of ignition, openings into the building, or any wet facility. This clearance area extends 10 feet above the highest regulator vent, 36 inches below the lowest regulator vent, and 12 inches beyond the farthest PG&E meter-set equipment.

2022 – 2023 2-32

Section 2, Gas Service

2.4.2. (continued)

Contact your local project coordinator about possible locations for regulator vents. (The regulations for large, industrial meter sets can vary.)

D. Minimum Meter Set Clearance Requirements

Figure 2-19, “Electric and Gas Meter Set Separation Dimensions and Clearances,” below; Figure 2-20, “Gas Meter Set Clearance from Building Openings,” on Page 2-35; and Figure 2-21, “Gas Regulator Set Clearance Requirement from Sources of Ignition,” on Page 2-36, all represent various metering facilities’ clearance requirements. If applicants install enclosures on their premises, the enclosures must meet the clearances provided in these illustrations.

See Figure 2-20 and Note 5 on Page 2-35

Figure 2-19 Electric and Gas Meter Set Separation Dimensions and Clearances

Notes in reference to Figure 2-19.

1. Electric meter panel locations are subject to utility approval and must comply with the applicable code requirements. PG&E does not have specific requirements for the distance from the electric panel to the outside building corner. See Section 5, “Electric Metering: General,” for properly locating the electric meters. See Subsection 5.4.4., “Working Space,” on Page 5-17, for electric meter working space.

Notes continued on the next page

2-33 2022 – 2023

Section 2, Gas Service

2.4.2. (continued)

Notes in Reference to Notes in reference to Figure 2-19 (continued).

2. Applicants must not install any electrical devices or equipment, including wires, cables, metering enclosures, telecommunication enclosures, bond wires, clamps, or ground rods within the shaded area around the gas meter. The 36-inch distance can be reduced to 18 inches for electrical devices or equipment certified for NEC Class I, Division 2 locations.

3. A solid and continuous conduit without couplings, joints, or connections is allowed to run completely through the shaded area at 6 feet or higher above the gas meter regulator vent.

4. Place the gas service riser 6 inches to 9 inches from the finished wall. The completed customer houseline at the service delivery point must extend a minimum of 4 to 6 inches from the finished wall where the meter is to be set and must be 26 inches above the finished grade. See Figure 2-14 on Page 2-28, Figure 2-15 on Page 2-29, and Subsection 2.5. on Page 2-49.

5. The minimum dimensions and clearances in Figure 2-19 are good for gas meters up to the 1,000 class. See Figure 2-14 and Figure 2-15 on Pages 2-28 and 2-29 for illustrations of clear and level work space in front of the gas meter.

2022 – 2023 2-34

2.4.2. (continued)

Section 2, Gas Service

Figure 2-20 Gas Meter Set Clearance From Building Openings

Notes in reference to Figure 2-20.

1. Do not place gas regulator vents under display platforms or show windows in commercial buildings. This includes any permanent, elevated display floors or platforms associated with the window, where the purpose of the window is to present a display to the public.

2. Do not place gas regulator vents under building overhangs where the overhang is likely to direct venting gas to a building opening.

3. The building vent openings, sources of ignition, and above-ground water sources must be a minimum of 36 inches away from the riser.

4. Applicants must not install water spigots, lines, gutter systems, or other water sources within 36 inches of the gas riser or electric facilities.

5. For a large meter set or multimeter manifold, the minimum separation requirement for sources of ignition, opening to buildings or sources of above-ground water, extend 12 inches beyond the farthest PG&E metering facilities and 10 feet above the highest regulator vent.

2-35 2022 – 2023

Section 2, Gas Service

2.4.2. (continued)

8’ Min.

8’ Min.

Figure 2-21 Gas Regulator Set Clearance Requirement from Air-Intake and Exhaust Fans

Notes in reference to Figure 2-21.

1. An 8-foot minimum horizontal and 10-foot minimum vertical clearance is required from the gas service riser to air-intake vents.

2. For a large meter set or multimeter manifold, this clearance requirement will extend 8 feet beyond the farthest PG&E meter equipment.

E. Panel Replacements and Conduit Connections to Existing Electric Panels, 400 Amps and Less, within the Gas Clearance Area

Electric panel upgrades, “like-for-like” panel replacements, and new electric conduit connections to existing electric meter panels may be allowed for an existing electric meter panel that resides within the gas clearance area as shown in Figure 2-19, “Electric and Gas Meter Set Separation Dimensions and Clearances, on Page 2-33, if all the following requirements are met:

1. The electric panel and electric conduit and equipment must not reside within the 36-inch radius from the gas regulator vent opening.

2. The electric panel must not reside within 12 inches on either side of PG&E gas facilities and 10 feet above the regulator vent opening as shown in Figure 2-22, “Clearance Requirements for an Existing Electric Meter/Panel,” on Page 2-38. If any portion of the existing electric panel resides within this area, the electric panel must be relocated outside all clearance areas shown in Figure 2-22 before the panel is replaced and any conduit connection is made.

3. Additional electric equipment/devices must not be installed within the clearance areas shown in Figure 2-22.

2022 – 2023 2-36

2.4.2. (continued)

Section 2, Gas Service

Exception: A continuous metallic conduit with no couplings or joints can run completely through and terminate/connect outside of the 36−inch radial clearance from the gas regulator vent opening.

4. All minimum clear and level working space requirements for the electric meter panel and gas meter set must be met.

2-37 2022 – 2023

Section 2, Gas Service

(continued)

L EGEND

No Existing Electric Meter/Panel and No New Electric Devices (See Notes 1 and 2)

Fittings, Couplings, or Joints No Electrical, No Conduit, No

Meter/Panel, and No New Grounding Wires or Clamps

ÕÕÕÕ Panel Upgrades and Like-for-Like Panel

Replacements are Allowed.

Figure 2-22 Clearance Requirements for an Existing Electric Meter/Panel

Notes in Reference to Figure 2-22:

1. This includes electric meters and panels in cabinets.

2. Junction boxes or other electrical enclosures must not be installed to replace the existing electric meter panel.

2022 – 2023 2-38

Section 2, Gas Service

2.4.2. (continued)

F. Multimeter Manifolds

Specific requirements in this subsection apply to particular types of premises (e.g., multifamily, apartment, and commercial buildings) where multiple meters are installed at a single location using the manifold configuration. These manifold connection requirements are additions to the meter-set requirements for single gas meter sets.

PG&E limits gas meter manifold configurations to one-tier or two-tier meter manifolds not exceeding 60 inches high. These manifolds are measured from the final, level, standing surface to the top of the manifold.

N OTE : Applicants must provide their PG&E project coordinator with a written justification for approval when requesting a three-tiered manifold or a manifold greater than 60 inches high.

PG&E will assess the applicant’s site and conditions for gas service and metering installations before approving an installation site. For manifolds requiring support brackets, the applicant must provide a wall surface with adequate structural support to use ¼‐inch x 1½-inch lag screws to secure all brackets.

Refer to Gas Design Standard J-15, located in Appendix C, for additional information.

2-39 2022 – 2023

Section 2, Gas Service

2.4.2. (continued)

Finished Grade

Two-Tier Manifolds

Figure 2-23 Dimensions for Typical, Residential, Multimeter Installations

Notes in reference to Figure 2-23

1. The applicant’s houselines must be stubbed out 4 inches to 6 inches from the finished wall at the locations shown.

2. The applicant must clearly mark each houseline . See Subsection 2.4.2.G.I., “Meter-Set Requirements for Marking Houselines,” on Page 2-47.

3. Gas meter manifolds may be built in a right-to-left configuration (reverse) when approved in advance.

4. Applicants must not install any electrical devices or equipment, including wires, cables, metering enclosures, telecommunication enclosures, bond wires, clamps, or ground rods within 36 inches horizontally from the riser and 12 inches from the farthest edge of PG&E facilities and 10 feet above the regulator vent.

5. Applicants may need to install the riser farther away from the building to accommodate the manifold installation. Consult your local project coordinator for site-specific details.

2022 – 2023 2-40

Section 2, Gas Service

2.4.2. (continued)

Table 2-2 Dimensions to Figure 2-23

G. Requirements for Alcoves, Enclosures, Gas-Meter Cabinets, Closets, and Gas-Meter Rooms

1. Alcoves

An alcove is an exterior space that is recessed into a building or wall. The alcove’s width can vary depending on the meter set. PG&E provides final dimensions after confirming the meter size. Please consult your local project coordinator for guidance.

For single-diaphragm meters, applicants must use the area dimensions shaded in Figure 2-14 on Page 2-27 and Figure 2-15 on Page 2-28 (depth not to exceed 36 inches).

For single-rotary meters, use the area dimensions shaded in Figure 2-16 on Page 2-29, Figure 2-17 on Page 2-30, and Figure 2-18 on Page 2-31 (do not exceed 36 inches deep and 8 feet high).

A manifold located in an alcove may require a custom design depending on the configuration.

Gates are not a preferred option and will be approved only on a case-by-case basis. If a gate is proposed in front of the alcove, it must have a minimum 50% open area.

The alcove must not have openings into the building, sources of ignition, or other facilities (e.g., wiring, water downspouts, or foreign pipes).

Contact your local PG&E project coordinator for more information.

2-41 2022 – 2023

Section 2, Gas Service

2.4.2. (continued)

2. Enclosures

Gas-Meter Set Enclosures

a. Typical Enclosure Details

Figure 2-24 Typical Detached Enclosure

Double Gate or

8’ 0” Minimum Headroom Required

Figure 2-25 Typical Enclosure Dimensions

Notes in reference to Figure 2-24 and Figure 2-25.

1. The enclosure’s length and width will vary depending on the meter set. Contact your local PG&E project coordinators for more information.

2. Approved enclosure wall materials include, but are not limited to, concrete block, wood, perforated or expanded metal, or metal chain−link fencing.

3. PG&E determines if the enclosure requires a wire mesh cover. If a mesh cover is required, it must have a minimum 50% open area.

4. All distances provided in Figure 2-25 are minimums. After PG&E confirms the meter size, final dimensions will be provided.

5. Trucks must be able to access large meter installations. Please contact your local PG&E project coordinator before designing locations for gas meters.

6. Additional meter protection may be required. Protection posts can be incorporated into an enclosure design.

2022 – 2023 2-42

Section 2, Gas Service

2.4.2. (continued)

b. Special Requirements for Gas Meters Serving Schools or Other Buildings Where Children Congregate

The following requirements apply to schools or other buildings where children congregate.

        - Locate the gas meter enclosure adjacent to the property line

or away from buildings in a wire cage enclosure or other suitable protective enclosure.

        - PG&E requires an overhead wire cover to prevent any

debris or other material from falling inside the enclosure. The applicant must ensure that PG&E is able to secure the enclosure with a PG&E lock.

        - It is the applicant’s responsibility to provide the enclosure

and concrete pad for the gas meter set. PG&E must approve the final design and size of the enclosure.

3. General Requirements for Meter Cabinets

Gas cabinets are not preferred and require PG&E’s approval in advance of construction. Applicants must ensure that all vent openings, louvers, and/or viewing windows are installed correctly. Also, applicants must ensure that the cabinets open to the outside and are readily accessible to PG&E at all times.

When approved by PG&E, the gas meter size represented in Figure 2-14, “Typical Residential Gas Meter Connection,” located on Page 2-28, can be installed in a cabinet.

On a case-by-case basis, PG&E may allow an applicant to install a gas meter the size of the one illustrated in Figure 2-15, “Typical Gas Meter Connection for 400 to 1,000 Class Meter,” located on Page 2-29, in a cabinet.

A gas estimator must provide the cabinet spacing and size requirements, which then must be approved by a Field Service Manager.

a. Specific Requirements for a Single Gas Meter Cabinet

PG&E determines the minimum cabinet size allowed for an

applicant’s specific type of meter and provide the applicant with those dimensions. PG&E bases cabinet requirements not only on the size of the meter currently required, but also on the location and accessibility of the meter. See Gas Design Standard K-51, located in Appendix C, when determining the specifications for single gas meter cabinets.

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Section 2, Gas Service

2.4.2. (continued)

zt

See Figure 5-2 on Page 5-15

b. Specifications for a Recessed, Individual Meter Cabinet

Electrical Panel

Offset Louvers

Front View Side View

Figure 2-26 Recessed, Individual Meter Cabinet for Gas and Electric Meter Installations

Notes in reference to Figure 2-26.

18”−36” Max.

4” Min.−6” Max. See Note 4

2” x 6” Wood Insert

1. Meter cabinets are not a preferred method of installation. Meter cabinets, with the exception of Class 250 meter installations, require approval from the local Field Services Manager before construction begins. When approved, they must comply with the requirements in this section.

2. Regulators will be installed on the outside of the cabinet. Additional space is required for larger regulators and dual-head regulators. The local Field Services Manager may approve the regulators to be installed in a cabinet. Regulators installed in a cabinet require the vents to be piped out as described in Gas Design Standard H-93, “Piping–Details: Regulator Vent Lines–Above Ground.”

3. See Subsection 2.5.1., “Service Delivery Point for the Gas Supply,” on Page 2-50. The houseline at the service delivery point also must be reinforced so that it can provide support for the meter set piping. The pipe must be rigid, a minimum of 3/4 inch, and have male National Pipe Thread (NPT) threads.

4. The houseline must extend a minimum of 4 inches and a maximum of 6 inches into the gas meter cabinet measured from the finished wall. The houseline must be 26 inches above the bottom of the

meter cabinet.

° 5. Applicants must provide louvered, non-metallic doors. Each door must open at least 90 .

6. The gas meter cabinet must have a gas-tight seal and be vapor proof from the building. Construction material and sealing requirements for the cabinet are described in Gas Design Standard K-51, located in Appendix C, and also apply to Figure 2-26.

Notes continued on the next page

2022 – 2023 2-44

Section 2, Gas Service

2.4.2. (continued)

Notes in reference to Figure 2-26 (continued).

7. Applicants must ensure that gas meters installed in cabinets comply with the requirements of the inspection authority having jurisdiction.

8. Do not place electric meter panels, equipment or devices, conduit or wiring, enclosures or electrical connections ; water services, faucets, downspouts, or other wet utilities within 36 inches of the gas riser including for services such as cable television or telecommunications.

Requirements for multiple, residential, gas meter cabinets are shown in Figure 2-27, “Cabinet Dimensions for Multiple, Residential Gas Meters,” and include dimensions and details.

Gas meter manifolds may be built in a right-to-left (i.e., reverse) configuration when approved in advance.

Gas Meter Meter Meter Meter 1 2 3 4

Note: All numbers represent inside dimensions.

To

Figure 2-27 Cabinet Dimensions for Multiple, Residential Gas Meters

4. Gas-Meter Closets

Gas meter closets will be furnished and installed by the applicant and have a depth of 18 inches minimum and 36 inches maximum without exception. Doors must be non-metallic and fully louvered. Doors must open at least 90° and have a clear opening height of 6 feet, 8 inches tall.

The inside of the closet must be made of nonflammable material and have a minimum 1-hour fire rating. All joints and penetrations must be sealed to prevent gas from migrating into the structure.

Foreign pipes are not allowed inside the closet with the exception of fire sprinkler heads. Lighting, wiring, conduits, junction boxes, or inspection panels of any kind are not allowed inside the closet. Bonding or grounding wires on the customer’s houselines are not allowed inside the closet.

The ceiling must have a 1:12 slope. The ceiling must slope up toward the door frame with a maximum 6 inches measured from the door opening to the finished ceiling. The inside width of the closet cannot exceed 8 inches beyond either side of the door frame.

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Section 2, Gas Service

2.4.2. (continued)

Refer to Figure 2-23 on Page 2-40 for manifold spacing to determine the size of closet required for the desired number of meters. The meters and manifold must fit within the opening of the closet doors with the exception of the tie-in piece from the outside riser. The riser and regulator will be installed outside of the closet.

The applicant provides a penetration through the wall into the closet. The pipe penetration from outside to inside must not conceal the pipe. It must be clearly visible for inspection. Contact your local project coordinator for the exact size and location of the required penetration.

The doors must have signs identifying “Gas Meters.” If the doors have locks, the applicant must install a lock box, provided by PG&E, near the closet in a location that is acceptable to PG&E and contains the access key provided by the applicant.

The closet cannot be used for storage of any kind. Only PG&E gas meters and metering appurtenances are allowed inside the closet.

5. Specific Requirements for Gas Meter Rooms

Refer to Gas Design Standard J-16, located in Appendix C, for specific requirements about gas meter rooms.

H. Meter Protection Requirements

Applicants must protect meter sets in locations that are subject to damage from vehicular traffic. PG&E determines when such protection is required. Refer to Gas Design Standard J-95, located in Appendix C.

Applicants must protect all gas meter sets located in the following areas.

1. Within 3 feet of:

• Single-family, residential driveways or parking areas (including garage areas)

      - Commercial refuse container locations
  
      - Thoroughfares
  
      - Paved areas with curbs
  

2. Within 8 feet of:

      - Multifamily, commercial, or industrial driveways or parking
   

areas (see the “Exception” below)

      - Loading docks

      - Freight-handling areas

      - Thoroughfares

      - Paved areas without curbs

2022 – 2023 2-46

2.4.2. (continued)

Section 2, Gas Service

E XCEPTION : Physical protection is not required for meter sets located within 8 feet of multifamily, commercial, or industrial driveways or parking areas if the meter set is located 3 feet behind a barrier that is adjacent to the area and if PG&E finds the barrier to be acceptable.

3. Within an area that has, in PG&E’s judgement, an unusually high risk of vehicular damage, the applicant must install a system of barrier posts that meet PG&E’s specifications. Consult your local project coordinator for specific requirements.

I. Meter-Set Requirements for Marking Houselines

Applicants must ensure that the following rules for marking houselines are followed.

1. Establish service at one Service Delivery Point, through one meter, and at one voltage class or pressure.

2. PG&E requires that lines are marked by attaching an embossed, durable, metal or plastic tag to each houseline. PG&E must approve of the tag.

3. Markings must be legible and specific.

4. Marking information must include an authorized apartment or street number and a use or location designation.

5. The houseline must be permanently, clearly, and prominently marked at the point of the service connection (i.e., service delivery point).

N OTE : PG&E will not install meters unless the permanent address, the location, or, when applicable, the area being served is marked at each meter location.

6. When gas meters are installed in interior locations or rooms, the words “Gas Meters” must be placed on the room or location access doors to allow PG&E employees to find the meters easily.

J. Meter Sets Requiring Electric Circuits for Communication

PG&E prefers to install, own, and maintain cellular equipment with a customer-provided, dedicated, electrical circuit for gas meter sets with electronic equipment that require communication. When applicants have an estimated average use of 10,000 therms per month or more, certain rate schedules, Automated Meter Reading (AMR), noncore accounts, or other nonstandard gas metering conditions, then the customer must provide an electrical circuit.

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Section 2, Gas Service

2.4.2. (continued)

When installing customer-provided, dedicated electrical circuits with no less than 15 amp and 120 volt alternating current (Vac) to a lockable disconnect switch within 3 feet of a gas meter that meets or exceeds National Electric Code (NEC) Class I, Division 2, Group D hazardous area requirements, all above-ground wiring must be placed in threaded, rigid-steel or intermediate-steel conduit with an above-ground riser conduit seal to prevent gas from migrating to areas classified as nonhazardous.

PG&E will inform the customer that if conditions change in the future, a phone line may be required. If cell service is not available or acceptable to PG&E, the applicant may be required to install, own, and maintain a nominal, 1-inch diameter conduit and a telephone cable to within 3 feet of the meter.

K. Gas Pulse Metering

Refer to Gas Standard J-65.1, “Volume Pulse Output Connection for Gas Meters,” located in Appendix C, for specific requirements about gas pulse metering.

L. Additional Meter-Set Requirements–SmartMeter � Module Location Requirements

PG&E’s SmartMeter Advanced Meter Reading system uses radio frequency (RF) technology to transmit gas meter reads automatically. This allows PG&E’s customers to monitor their daily energy use.

SmartMeter customers have additional location requirements specific to the meters necessary for PG&E to operate its SmartMeter Advanced Meter Reading system. Applicants must be aware of the following requirements to ensure that the SmartMeter Advanced Meter Reading system can operate properly.

1. Do not locate the meters in any room, cabinet, enclosure, or configuration that blocks or interferes with the radio frequency signal transmissions. An example of such a prohibited enclosure is a metallic cabinet.

2. Do not locate the meters in close proximity to (i.e., 6 inches or less) any metallic object that could block or interfere with the radio frequency signal transmission.

3. Do not install gas meters within 5 feet of building walls and ceilings if they are made from a significant amount of metal or metal reinforcements.

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2.4.2. (continued)

Section 2, Gas Service

4. Most SmartMeter gas modules are installed directly on a gas meter. If a gas meter is installed in a cabinet, meter room, below grade, basement garage, or other location where communication problems may exist, PG&E may install a module in a remote location away from the gas meter to ensure proper radio frequency transmissions. The equipment may be installed on nearby gas piping, a customer-owned building wall/ceiling, or an outside location. The equipment may need to be attached to the structure or wall to route the wiring.

M. SmartMeter Gas Network Utility Closet Requirements for Indoor Meter Rooms

This section provides SmartMeter infrastructure installation and construction requirements for customers designing indoor gas meter rooms. It addresses below-grade and multiple above-grade meter room installations such as those that may exist in urban, high-rise environments to ensure PG&E’s SmartMeter RF network is established for these customers. These provisions are required for commercial and/or residential, with single or multiple indoor meter rooms to ensure SmartMeter gas network communication access and performance.

A separate SmartMeter gas network utility closet must be constructed for each indoor meter room directly adjacent (with a common or shared wall) to the natural gas meter room. In addition, two 1-1/2 inch conduits would be required; one from the SmartMeter gas network utility closet to the outside of the building and one from the SmartMeter gas network utility closet to the indoor gas meter room. See the requirements listed in Gas Design Standard J-16, located in Appendix C,

2.5. Applicant-Owned and Installed Gas Service Piping (e.g., Houseline), Valves, and Automatic Shut-Off Devices

The applicant is responsible for maintaining the applicant-installed and owned gas service piping, valves, automatic shut-off devices (e.g., earthquake valves), or other piping components on any premises or in any building. These applicant-owned components must be installed downstream of (i.e., after) the gas supply service delivery point. PG&E reserves the right to suspend service until applicant-owned equipment is removed from PG&E meter-set assemblies.

Applicants must ensure that after their equipment is installed, the equipment does not obstruct the operation or serviceability of PG&E’s piping, metering, and pressure-regulating equipment.

The houseline at the service delivery point typically is located after the PG&E service tee for residential services. Reinforce the houseline so that it provides support for the meter-set piping. For residential service, the houseline stub-out must be a minimum of 3/4-inch steel rigid pipe with male NPT threads. Larger gas loads or commercial meter sets may require a flanged connection.

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Section 2, Gas Service

2.5.1. Service Delivery Point for the Gas Supply

The service delivery point for the gas supply is the point where PG&E’s facilities connect to the applicant’s house pipe (i.e., houseline). Figure 2-1 on Page 2-6 illustrates a typical service delivery point.

For residential and small commercial meter sets, the service delivery point is the point where the male threads of the applicant’s houseline connect to the female threads of PG&E’s gas service tee fitting.

Some commercial installations and industrial installations do not have service tees installed. For these installations, the gas supply service delivery point is located after the gas meter, gas pressure regulator, or regulation equipment. Specifically, it is the point where the gas service bypass reconnects with the gas service outlet piping.

Typically, the gas supply service delivery point is either the first weld or fitting after the PG&E-installed bypass valve downstream of (i.e., after) the gas meter. See Subsection A in Figure 2-16 through Figure 2-18 on Page 2-30 through Page 2-32.

PG&E does not allow applicants to access the pipe fitting’s plug. Only PG&E employees are authorized to access the plug when they perform service and maintenance.

Applicants must not connect or install non-PG&E components to any portion of the PG&E gas meter set upstream of (i.e., before) the service delivery point.

Applicants must provide a securely supported gas houseline connection to PG&E piping either by bracing or by reinforcing the houselines that extend from finished walls. Do not connect flexible houseline directly to PG&E piping. (Exceptions include subsidence areas, mobile home parks, and manufactured homes as described in Gas Design Standard J-12.4, “Mobile Home/Manufactured Home Meter Set Installation,” and Gas Design Standard J-58.)

When applicants require a gas supply for multiple gas meter installations that are supplied by a manifold, PG&E will install gas service tees downstream of (i.e., after) each gas meter. PG&E will install these service tees to each location where the utility gas service pipe connects to the applicant’s houseline at the service tee.

2022 – 2023 2-50

Section 2, Gas Service

2.5.1. (continued)

Gas Regulator

ÔÔÔÔÔÔÔÔÔÔÔÔÔÔ

Front View

Threaded Pipe Plug (For PG&E Use Only)

Gas Flow

Delivery Point

SM Module

Front View

Gas Flow

Delivery Point

Side View

Figure 2-28 Typical Residential Installations [Ô]

Side View

2.5.2. Applicant-Owned Riser and Pipe

PG&E recommends that applicants use the gas-riser configuration shown in Figure 2-29, “Recommended, Applicant-Owned Riser and Pipe,” on Page 2-52, when they install above-ground gas pipe that transitions to underground gas pipe. The preferred riser for most applications is a noncorrodable, prefabricated riser.

Also, PG&E recommends that applicants contact the local authority having jurisdiction before installing ferrous gas pipe and ask for the requirements to protect the underground pipe from corrosion.

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Section 2, Gas Service

2.5.2. (continued)

A. Applicants are encouraged to have all buried gas houseline pipe inspected on a regular schedule. Applicants should contact locally licensed plumbing contractors if they need assistance in locating, inspecting, or repairing their buried gas service pipe or other piping equipment.

B. Applicants must ensure that all required cathodic protection is in place and documented as illustrated in Figure 2-29 below.

C. Applicants must ensure that their facilities are designed and installed to the requirements of the governmental authorities having jurisdiction. PG&E recommends using the Uniform Plumbing Code, which requires the following protective measures.

1. Apply a coating and cathodic protection to steel pipelines.

2. Repair any coating that is damaged during installation.

3. Install copper tracer wire with nonmetallic gas pipe.

4. Provide a minimum 18-inch cover for plastic yard pipe used to carry gas.

Figure 2-29 Recommended, Applicant-Owned Houseline Riser and Pipe

Notes in reference to Figure 2-29.

1. Always maintain a minimum distance of 36 inches between the vertical centerline of the riser and the transition fitting.

2. If the area around the gas riser is going to be paved, install a minimum 3-inch sleeve around the riser.

3. Comply with city regulations when installing a plastic-to-steel riser (as shown) or a noncorrodable, prefabricated riser on the applicant’s houseline.

2022 – 2023 2-52

Section 2, Gas Service

2.5.3. Electrically Bonding and Grounding Gas Pipe

A. Do not install electrical devices or equipment, wires, cables, bonding or grounding wires, clamps, or ground rods around the gas meter set as shown in Figure 2-19 on Page 2-33 and Figure 2-23 on Page 2-40.

B. Do not use PG&E’s gas service piping, gas risers, or meter facilities for electric bonding or grounding that allows the gas meter, piping, or other gas facilities to become current-carrying conductors.

C. Do not allow customer houseline to be electrically bonded within meter enclosures, cabinets, or meter rooms.

2.5.4. Applicant-Owned Protective Equipment

PG&E’s gas metering equipment can be affected adversely when an applicant’s equipment causes:

 - Pulsations in the gas flow

 - Sudden changes in flow rate

 - A backflow condition

Applicants must install, at their expense, any equipment necessary to mitigate or eliminate these detrimental effects. PG&E must review and approve these installations before initiating gas service.

Applicants must add any necessary protective equipment when their operations change and those changes could create any of the three adverse conditions described in the bulleted list above.

PG&E may terminate service and refuse to restore that service to any applicant who continues to operate without the proper protective equipment after receiving notification from PG&E.

Applicants are responsible for damages made to PG&E equipment because they did not install the proper protective equipment.

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Section 2, Gas Service

This Page Intentionally Left Blank

2022 – 2023 2-54

Section 3 Electric Service: Underground

3.1. Scope

This section of the manual provides information to help applicants, as well as their engineers and contractors, select acceptable locations and types of terminations for underground services when connecting to Pacific Gas and Electric Company’s (PG&E’s/Company’s) overhead or underground electric distribution system.

N OTE : For technical information on primary services, refer to Numbered

Document 094676, “Primary Electric Service Requirements,” and for temporary or permanent service to a post or pedestal, refer to the applicable documents in Appendix C, “Electric and Gas Engineering Documents.”

3.2. General Information

PG&E has the right to access Company facilities located on an applicant’s premises at any time, for any purpose connected with furnishing gas and/or electric service. Applicants must not access PG&E facilities or enclosures. Only qualified PG&E employees will connect service lateral conductors to (or disconnect them from) PG&E’s energized distribution system. This includes installing or removing metering facilities or any other work related to PG&E’s facilities or systems.

3.2.1. Safety Reminder

WARNING

T O AVOID POTENTIAL ACCIDENTS, DO NOT BEGIN TO EXCAVATE BEFORE

IDENTIFYING UNDERGROUND FACILITIES.

C AUTION

Flame resistant (FR) clothing is required while working on, working near, or observing others working on any PG&E facility.

State law requires applicants to contact Underground Service Alert (USA) by dialing 811 at least 2 working days before excavation (weekends and holidays excluded). Ensure that you call USA when planning underground work, before digging begins, to allow adequate time for USA to determine the location of underground gas and electric lines or equipment. The potential for an accident exists if applicants fail to request USA to identify underground utility facilities before they begin excavating .

3-1 2022 – 2023

USA

Dig Safely

Section 3, Electric Service: Underground

3.2.1. (continued)

First, the applicant must mark the excavation area with white paint. Then, USA arranges for participating companies to mark the locations of their underground facilities at the jobsite. This is a free service. See the USA color-code identifiers in Section 1, “General,” Table 1-1, “USA Color Coding,” on Page 1-1, and also on the back of this manual.

s for participating companies to mark the locations of their underground facilities at the jobsite. This is a free service. See the USA color-code identifiers in Section 1, “General,” Table 1-1, “USA Color Coding,” on Page 1-1, and also on the back of this manual.

Additional information is available at www.pge.com/digsafely and about USA services at the USA North website http://www.usanorth.org. USA is a locating service for excavation only. Do not use USA for design purposes.

3.2.2. Establishing Underground Electric Service Responsibilities

Applicants are responsible for constructing, maintaining, and protecting specific portions of underground electric services during construction of their project. The following subsections describe those responsibilities and explain PG&E’s responsibilities during the construction process.

A. Applicants are responsible for obtaining all required permits and easements . This includes local building permits, environmental permits, encroachment permits, public utility easements, and any other permits and land rights that may be required based on the specific location of the trenching/excavation activities.

B. Applicants must ensure that the following construction activities, which may be required to establish underground service, are performed according to PG&E’s standards and specifications, PG&E-approved construction drawings and inspection requirements, and any other permit-specified requirements. This includes construction activities conducted on private property, in the franchise area, or in other rights-of-way areas. Construction activities include:

    - Trenching

    - Excavation

    - Backfill

    - Compaction

    - Underground conduit (conduit, bends, couplings, end bells, cable

protectors)

    - Service riser conduit and connector (connects underground conduit

to meter panel or termination enclosure)

    - Substructures (boxes and pads)

    - Paving (cut, patch, and final repair)

C. Applicants must provide satisfactory termination facilities on or within the structures being served. (In this manual, see Sections 5, 6, 7, 8, 9, 10, and 11, as applicable, based on your project type, amperage, and voltage.) The locations for all transformers and meters, as well as the sizes, types, and quantities of conduit, are subject to PG&E’s specifications and approval.

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Section 3, Electric Service: Underground

3.2.2. (continued)

D. A pplicants must not install service conduit, meter, and service equipment in prohibited locations. These include, but are not limited to, outdoor areas less than 300 feet away from biowaste, toxic, corrosive, or similar type of unsafe substances that could be released into the air, are in the ground soil, located in open air wet ponds, or stored in a dry location. See Section 5, “Electric Metering: General,” Subsection 5.3.2.,

“ ” Prohibited Meter and Service Equipment Locations, on Page 5-7.

E. Applicants are responsible for owning and maintaining conduit and substructures on private property; however, they must convey ownership of any portion in a public (i.e., franchise) area or right-of-way, if applicable, to PG&E.

F. Applicants are responsible for providing, installing, and maintaining any structures that are required to protect service facilities from damage.

G. If projects require Horizontal Direction Drilling (HDD), applicants or their contractors must contact PG&E before work begins. PG&E Manual TD-4135M, Horizontal Directional Drilling Manual, as well as PG&E Procedure TD-4632P-01, “Gas and Electric Operations−Cross Bore Prevention and Mitigation,” both outline the construction processes that applicants must follow to be in compliance.

If an applicant does not contact PG&E in advance of construction and does not follow the HDD processes identified in the Company documents described above, the applicant will fail the HDD installation inspection. It is then the applicant’s responsibility to correct issues noted during the inspection before PG&E accepts ownership of the HDD project.

When applicants are responsible for this trenchless construction, they must take steps to prevent, inspect, identify, report, and address any cross bores that are created during the HDD process.

All electric and gas construction work performed either by or for PG&E is subject to these rules, including PG&E gas-for-electric work and other types of applicant-installed work. Find additional information about cross bores at the Sewer Cleaning website. See http://www.pge.com/en/safety/gaselectricsafety/sewercleaningsafety/index.page).

.

H. PG&E is responsible for and required to perform any and all tie-in work to existing distribution and/or energized facilities.

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Section 3, Electric Service: Underground

3.2.2. (continued)

I. PG&E is responsible for furnishing, installing, owning, and maintaining the following service facilities, as applicable.

    - Cable/conductors to supply power

    - Transformer

    - Meter(s) and metering transformers, if required

    - Other equipment (e.g., switches)

    - Riser materials (to connect underground service to overhead facilities)

For additional details and options for performing this work, refer to Electric Rule 15 , “Distribution Line Extensions,” and Electric Rule 16, “Service Extensions,” found online at https://www.pge.com/tariffs/index.page.

Splice Box, Transformer, or Pole (See Note 5)

(See Note 5)

Walls on which underground electric service - termination and meter facilities are permitted.

Outside building walls.

Figure 3-1 Locations of Underground Electric Service-Termination and Meter Facilities

Notes in reference to Figure 3-1.

1. If practical, attach the underground electric service-termination facility and the meter to the wall at a preferred location. Locate the facilities as close to PG&E’s service facilities as possible to avoid future operation and maintenance restrictions.

2. PG&E must approve all service locations before they are constructed.

3. Applicants must locate the service so that the meter can be read and serviced without entering a fenced or enclosed location, when possible.

4. Permitted locations for electric service-termination and meter facilities are from Point A.

5. Permitted locations for electric service-termination and meter facilities are from Point B.

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Section 3, Electric Service: Underground

3.2.3. Installing Ground Rods

Applicants or their contractors are required to install ground rods when PG&E specifically requires them as part of a substructure installation (e.g., when constructing a transformer pad). Find PG&E-approved ground rods and clamps in Numbered Document 013109, “Corrosion Resistant Ground Rods and Ground Rod Clamps,” included in Appendix C.

3.2.4. Installing Equipment Pads

Applicants or their contractors must construct and install equipment pads, as required, for underground electric equipment. When constructing a concrete pad for a transformer, use Numbered Document 045292, “Concrete Pad for Three-Phase, Loop-Style Pad-Mounted Transformers.” If installing a box pad for a transformer, use Numbered Document 064309, “Box-Pad for Pad-Mounted Transformers.” Both engineering documents are listed Appendix C.

For projects that require equipment pads other than for transformers (e.g., PMH switches), the project coordinator or PG&E inspector provide these drawings at the pre-construction meeting if the installation is included in the PG&E-approved design.

Underground electric equipment has required working space clearances in front of and all around the equipment. Applicants must ensure the minimum clearances are met. See Numbered Document 051122, “Clearances and Location Requirements for Enclosures, Pads, and Underground Equipment,” located in Appendix C.

Construct customer-owned, floor-standing switchboard pads (0–600 volts) according to their applications. Figure 3-2, “Service Conduit Layout–Top View,” on Page 3-6, and the associated “Notes,” provide the placement and arrangement for service conduits inside the utility termination section or pull section.

For primary switchboards, refer to the ground rod and conduit requirements in Section 11, “Electric Switchboards: 601 Volts Through 25,000 Volts and Primary Services,” Subsection 11.3.S., on Page 11-4, and Figure 11-1, “Primary Switchboard Termination Section Pad Detail,” on Page 11-6.

For additional references to the underground electric documents provided in Appendix C, see Table 3-2, “Electric Underground Documents,” on Page 3-23.

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Section 3, Electric Service: Underground

3.2.4. (continued)

Pad-Mounted Service Termination Enclosure

Front

Conduits

Service Conduit Arrangement Detail

Figure 3-2 Service Conduit Layout–Top View

Notes in reference to Figure 3-2.

1. Group the conduits at the service termination (i.e., pull section) enclosure as shown in the “Service Conduit Arrangement Detail.”

2. Center the conduits under the cable termination bus or bus stubs.

3. Conduits should be separated from each other by approximately 1 inch.

4. Ensure the top of each conduit is 2 inches above the concrete pad or floor of the switchboard.

5. Permanently install end bell fittings on all conduits.

6. Temporarily plug or cap all conduits.

7. Grout conduit windows with nonshrink grout. Do not use asphalt or blacktop to grout windows .

8. For primary service conduit installations, see Section 11, Figure 11−1, “Primary Switchboard

Termination Section Pad Detail.”

3.2.5. Installing Overhead and Underground Service for Two or More Buildings on One Lot

If more than two dwellings or buildings are located on the same lot, applicants must consult their local PG&E project coordinators to determine the acceptable service-termination locations and meter locations before wiring the buildings.

N OTE : See Table FM-1, “Service Planning Office and Inspection

Desk Contact Information,” at the front of this manual starting on Page iv, for specific contact numbers listed by area.

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Section 3, Electric Service: Underground

3.2.5. (continued)

Typically, PG&E only installs one service lateral to a single building on one premise, or to a single enterprise (with either one or multiple buildings) on one premise. However, PG&E may provide more than one service lateral under the following circumstances:

    - Where it is allowed or required by PG&E’s tariff schedules

    - For PG&E’s convenience

    - Where it is required by ordinance

    - When it is installed as special facilities

3.2.6. Inspecting and Approving Overhead and Underground Services

An applicant must contact the local PG&E project coordinator to arrange for a field representative to inspect and approve the applicant-furnished and installed service equipment, as well as any other mandatory components required for an underground service installation.

3.2.7. Easements for PG&E Facilities

New underground distribution facilities must be designed for installation in a Public Utility Easement (PUE) outside of public streets and roads. PUEs typically only provide the minimum-required land space for the safe and proper installation, operation, and maintenance of the distribution facilities. In some cases, PG&E may require an easement be granted instead of a PUE.

Ensure that PUEs are at least 10 feet wide for primary, secondary, and service cables. Cables should be installed around the centerline of the PUE. If other allowed non-PG&E utilities (e.g., phone, cable) and PG&E facilities (i.e., gas) are installed in the PUE, ensure the minimum clearances between facilities are met. Also, ensure clearances to below- and above-grade foreign structures, buildings, and obstructions outside of the PUE are met.

Services that cross third-party property also require a 10-foot-wide easement. In some instances, the PUE may need to be wider than 10 feet. See Figure 3-3, PG&E Trench and Equipment in PUE – Example,” on Page 3-8.

In locations along the path of the PUE where subsurface enclosures and pad-mounted equipment will be installed, the PUE must be wider to encompass the equipment being installed and to meet the minimum required working space clearances that surround the equipment. See Numbered Document 051122. If the PUE does not provide adequate space for equipment and minimum clearances, an easement granted to PG&E will be required.

Contact your local project coordinator for questions on PUE requirements, determining the best locations for distribution facilities, and high-density housing projects with short setbacks from the property line.

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Section 3, Electric Service: Underground

3.2.7. (continued)

Figure 3-3 PG&E Trench and Equipment in PUE − Example

3.2.8. Clearances Around PG&E Facilities

Applicants must not construct structures or install equipment, including, but not limited to, buildings, homes, customer generation equipment, agricultural wells, or expansions of existing structures over, under, to the sides, or between PG&E overhead or underground facilities, either in the public right-of-way or on private property, without maintaining the proper clearances. PG&E facilities are typically covered by an easement, right-of-way, or land-right agreement, and require minimum clearances be maintained around the facilities. When in doubt, contact the PG&E Land Department and your local project coordinator for help in determining the land rights and clearances required for existing PG&E facilities.

3.3. Underground Service Installation Requirements

3.3.1. Installing Services from Underground Distribution Systems

PG&E serves applicants from an underground service if the site or lot is located in an area that is supplied from an existing underground distribution system. PG&E owns, maintains, and installs the underground service lateral conductors. PG&E provides underground-to-underground service along the shortest, most practical, and most available route to the applicant’s service-termination facility.

Typically, the termination facility is on or within the building or structure, as shown in Figure 3-4, “Underground-to-Underground Service Connection,” on Page 3-9. PG&E installs the conductors in conduit.

Substructures include conduit, boxes, and transformer pads. Applicants must follow PG&E’s guidelines and specifications, including those specified in Electric Rule 16 .

PG&E installs the transformer, if required, and connects the service lateral conductors to the applicant’s termination facilities.

2022 – 2023 3-8

3.3.1. (continued)

Section 3, Electric Service: Underground

PG&E’s Distribution Box Manhole or Switch Enclosure

Figure 3-4 Underground-to-Underground Service Connection

Notes in reference to Figure 3-4.

1. When the service delivery voltage is the same as the available, primary distribution voltage (i.e., over 2,000 volts), typically the applicant provides a primary splice box according to PG&E’s requirements.

2. PG&E supplies a transformer, if required. (The applicant must provide the trench, backfill, and required conduit, pad, and substructures.)

3. PG&E­owned primary and/or secondary conductors. (The applicant must furnish the substructures.)

3.3.2. Installing Services from Overhead Distribution Systems

PG&E provides service from an underground riser that is installed on an existing pole, as shown in Figure 3-5, “Overhead-to-Underground Service Connection,” on Page 3-10, if any of the following requirements are met.

A. The applicant is located in an area served from an overhead system and the applicant prefers to have the service installed underground.

B. The applicant’s load requires a transformer that is 75 kilovolt amperes (kVA) or larger.

C. A local city or county ordinance requires underground service.

In these cases, in addition to the requirements described in Subsection 3.3.1., “Installing Services From Underground Distribution Systems,” on Page 3-8, the applicant must pay the material costs of both the pole riser facility and any conduit required in the public right-of-way.

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Section 3, Electric Service: Underground

3.3.2. (continued)

See Note 2

Primary Pull or Splice Box May Be Required (Consult PG&E)

Applicant’s Termination Facilities

Building Wall

Figure 3-5 Overhead-to-Underground Service Connection

Notes in reference to Figure 3-5.

1. When the service delivery voltage is the same as the available, primary distribution voltage (i.e., over 2,000 volts), typically the applicant provides a primary splice box according to PG&E’s requirements.

2. PG&E’s pole and secondary riser. (The applicant must pay the installed cost of the pole riser and conduit within the right­of­way.)

3. PG&E­owned service lateral conductors. (The applicant must furnish the conduit, as required.)

2022 – 2023 3-10

Section 3, Electric Service: Underground

3.3.3. Installing Conduit for Underground Service

N OTE : PG&E will not install its supply cables in conduits that run beneath any building or structure when those conduits do not terminate on or within that building or structure, but are intended to supply another building or structure on the same or another premise.

PG&E requires applicants to install a conduit system for underground service laterals. It is the applicant’s responsibility to provide service conduit as described in the following PG&E documents. Refer to the following numbered documents, located in Appendix C.

 - [Numbered Document 038193, “Minimum Requirements for the Design](https://www.pge.com/pge_global/common/pdfs/services/building-and-renovation/greenbook-manual-online/038193.pdf)

and Installation of Conduit and Insulated Cable”

 - [Numbered Document 062288, “Underground Conduits”](https://www.pge.com/pge_global/common/pdfs/services/building-and-renovation/greenbook-manual-online/062288.pdf)

 - [Numbered Document 063927, “Methods and Requirements for](https://www.pge.com/pge_global/common/pdfs/services/building-and-renovation/greenbook-manual-online/063927.pdf)

Installing Residential Underground Electric Services 0–600 V to Customer-Owned Facilities”

/common/pdfs/services/building-and-renovation/greenbook-manual-online/063927.pdf) Installing Residential Underground Electric Services 0–600 V to Customer-Owned Facilities”

 - [Numbered Document 063928, “Methods and Requirements for](https://www.pge.com/pge_global/common/pdfs/services/building-and-renovation/greenbook-manual-online/063928.pdf)

Installing Non-Residential Underground Electric Services 0–600 Volts to Customer-Owned Facilities”

Applicants must ensure that conduit is not installed in a trench at a depth greater than 60 inches. If large utility pipes or drains are obstructing the service path, the trench may be as deep as 10 feet to traverse under the obstructions and then transition back to the proper trench depth.

Conduit runs must have a polyester pull-tape (Code 560154) to initiate the cable pulling. The pull-tape must be attached securely either to conduit plugs or caps. For spare conduits that will be vacant for 30 days or longer, install detectable pull-tape (Code 602679) so the spare conduit can be identified during mark and locate field work.

Applicants must prove that the entire conduit system is free of dirt, rocks, or other obstructions that could prevent, hinder, or harm installing the electric conductors. Applicants must use a PG&E-approved mandrel to prove the conduit system. See Subsection 3.5., “Mandrels,” on Page 3-20, for details. A PG&E inspector must approve the equipment and the method, and observe the work being performed to prove the service conduit system’s readiness.

Applicants can either choose to perform the underground electric service conduit installation or request PG&E to do the work. Either way, applicants must provide the service riser conduit that extends from the conduit bend out of the ground and into the electric meter panel or service termination enclosure. The service riser conduit must be vertically straight and cannot contain any couplings, offsets, or bends.

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Section 3, Electric Service: Underground

3.3.3. (continued)

Applicants must furnish and install either conduit caps or plugs on the ends of all conduits. In addition, at locations where the cable insulation may be damaged (e.g., transformer pads or switchboard pull sections), applicants are required to install cable protection at all of the conduit ends. Applicants should contact their local PG&E project coordinator for specific requirements. Also see Numbered Document 038193, “Minimum Requirements for the Design and Installation of Conduit and Insulated Cable,” located in Appendix C.

Applicants must be aware that underground conduits, enclosures, and substructures must not be installed in the ground or in buildings foundations before PG&E issues an approved design for the installation. Unapproved installations are considered “at risk” and the applicant assumes the risk for any work performed without requesting PG&E’s advanced approval. PG&E can charge the applicant if it is necessary to make changes to unapproved work.

PG&E inspectors, at their discretion, can deny or allow at-risk installations. Inspectors also can require pot holing in the foundation and ground or require other inspection methods needed to determine if installation meet requirements.

When an applicant designs and constructs a PG&E-approved electric room inside of a building, an outside wall must be used as one of the walls of the electric room. The conduits passing through or under the applicant’s building foundation or slab must not extend past the outside wall into the room by more than 20 feet and must terminate inside the electrical room.

Refer to Section 5, “Electric Metering: General,” Subsection 5.3.4., “Electric Meter and Service Termination Equipment Rooms,” on Page 5-16, and Figure 5-1, “Allowable Locations for Electric Service and Meter Rooms,” on Page 5-11.

3.3.3.1. Galvanized Rigid Steel Conduit and Couplings

When new galvanized rigid steel (GRS) conduit is used as riser conduit transitioning from the underground service conduit up to the electric meter panel, the following requirements apply.

    - The top end of the riser (the end that is inside the meter panel) must

be threaded and requires a screw-on lock nut.

    - A cable protector is required.

    - Do not use set screw couplings or lock nuts on new installations.

The following exceptions apply for existing, rigid-steel conduit risers that will be reused during an electric meter panel change, if applicable.

    - If the riser is not threaded, then a conduit lock nut with a set screw is

allowed.

    - If a coupling with set screws already exists in the riser conduit, then

it does not need to be replaced.

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Section 3, Electric Service: Underground

3.3.3. (continued)

New and existing rigid steel conduit does not need to be bonded to the electric panel.

All polyvinyl chloride (PVC) and steel couplings, including plastic-to-steel transition couplings, must be installed below grade and must not be exposed above grade. When a coupling is installed inside of a foundation, the top edge of the coupling may be flush with the top of foundation concrete.

3.3.4. Installing PG&E-Only Service Trenches

Applicants must ensure that trenches containing only PG&E electric service facilities or PG&E electric and gas service facilities are covered, as required, when those trenches are located on:

  - Private property

  - Designated sidewalks

  - Parkways

  - Driveways

The electric service conduit and gas pipe must be covered on private property or in the franchise as described in the following text. The required minimum clearances must be maintained as listed in Table 3-1, “Minimum Separation and Clearance Requirements for Service Trenches,” on Page 3-19.

A. Provide a 24-inch minimum cover for secondary (i.e., 0−750 volts) electric service conduit and gas pipe.

B. Provide a 36-inch minimum cover for primary (i.e., over 750 volts) electric service conduit.

The term “cover” refers to the standard distance between the outer surface of an underground facility and the final grade level. The actual trench depth must be greater than the cover depth .

All electric service and secondary conduit must enter PG&E splice boxes or enclosures from the bottom for new construction and not through the boxes’ conduit knockouts. If the top of the conduit is not at or below the required minimum conduit depths, the applicant needs to increase the installed depth of the conduit at those locations. See notes in Numbered Document 028028, “Secondary Electric Underground Enclosures,” located in Appendix C.

PG&E may require the applicant to provide other means of protecting the service conduit in the following circumstances.

  - Increased traffic loading

  - Soil erosion

  - Open ditches

  - Where digging machinery or equipment may be used

This increased protection also may be required in areas where similar situations either are anticipated or exist already.

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Section 3, Electric Service: Underground

3.3.4. (continued)

Applicants must ensure that the trench depth is sufficient to meet the minimum depth requirements when taking into consideration the following conditions.

• The required depth of cover (as described previously)

  - The size of the conduit that is being installed (e.g., 3 inch, 4 inch)
  
  - The necessary bedding materials
  
  - The size of the electric conduit bends (e.g., 24-inch or 36-inch bends)
  

When installing 4-inch and 5-inch diameter conduit that requires a 36-inch vertical bend at the pole, transition the trench to a greater depth before reaching the pole to accommodate for the larger radial bend. At the pole, the conduit must extend vertically above grade a minimum of 2 inches to a maximum of 6 inches.

For service trenches (e.g., secondary voltage and 3-inch conduit) on private property or in the franchise, the required minimum depth of trenches below grade is 30 inches. For primary services, the minimum trench depth is 42 inches for 4-inch conduit and 44 inches for 6-inch conduit.

Applicants must receive pre-approval from the PG&E inspector when requesting an exception to the minimum-depth requirements. Applicants should contact their local PG&E project coordinator with questions about trench depth.

Applicants should be aware that wet utilities must always be separated from the electric and gas service trench, meters, and risers. Wet utility piping or facilities include, but are not limited to, water, bioswales, storm sewer, sanitary sewer, steam, liquid fuels, oil, diesel, sprinkler, irrigation, spigots, downspouts, drain or leach lines, propane, or lines for other liquids or volatile, heavier-than-air gases. For more information, see PG&E Standard S5453, “Joint Trench,” Exhibit B, Joint Trench Configurations & Occupancy Guide, located in Appendix B, “Electric and Gas Service Documents.”

Also, when applicants plan to install electric service facilities with other services, such as telephone or cable television, they must refer to:

  - Subsection 3.3.8., “Installing Joint Utility Service Trenches,” on

Page 3-17.

  - Figure 3-6, “Typical Joint Service Trench,” on Page 3-18.

  - Table 3-1, “Minimum Separation and Clearance Requirements for

Service Trenches,” on Page 3-19.

Applicants should contact their local PG&E project coordinator in the development stages of their projects for additional details and requirements about using joint trenches.

2022 – 2023 3-14

Section 3, Electric Service: Underground

3.3.5. Installing Offsets

In situations where more than two 90° bends are needed, applicants should consult their local PG&E project coordinators to determine whether additional raceway pull-boxes will be required to avoid excessive pulling tension on the service cables.

A. PG&E does not approve short-radius conduit fittings, commonly known as LBs or service elbows, for use in underground service conduits that are intended to hold PG&E service conductors. Applicants must ensure that offsets are not installed in the following situations.

1. Do not make an offset in the service lateral conduit entering the electric service panel or enclosure.

2. Avoid making an offset in the conduit system because it may prohibit the use of a mandrel to prove the acceptability of the conduit system.

3. Avoid making an offset in the service conduit because it will increase the pull tension required to install the service conductors.

B. In some situations, applicants may be required to perform both of the following numbered actions.

1. Install larger conduits and/or additional splice boxes or pull boxes to accommodate the installation of the conductors.

2. Transition to cables appropriately sized for the service capacity.

C. The following scenarios represent situations where B.1. and B.2., on Page 3-15, could be required.

1. Construction sites where PG&E determines that larger-than-standard cables or conductors are required to maintain voltage and flicker drop.

2. Construction sites where normal pulling tensions may be exceeded.

N OTE: Applicants must be aware that pin adaptors, cable ringing, or splicing on additional cable will not be used to terminate cables. PG&E does not accept these termination techniques.

3.3.6. Selecting Backfill

Applicants must use backfill (i.e., sand or native soil) to provide a smooth bedding area when installing utility facilities. The backfill must fill all of the voids around the facilities and provide at least 12 inches of cover for the conduit or pipe. PG&E considers soil that contains occasional, rounded rocks that are 1/2 inch in diameter or less to be acceptable backfill.

Crushed rock or sharp-edged materials of any kind, or backfill containing easily breakable dirt clods larger than 6 inches in diameter, are not acceptable.

Additionally, PG&E prohibits applicants to use backfill with rocks greater than 3 inches in any dimension within 6 inches of the top of the pipe or conduit or less than 12 inches below the pavement subgrade.

3-15 2022 – 2023

Section 3, Electric Service: Underground

3.3.6. (continued)

In sections where a shallow trench is needed and allowed, place a cement-slurry cap above the conduit. The cap must be a minimum of 3 inches thick and made from a cement-slurry mix. The mix must consist of a two-sack sand slurry, with red dye mixed in. The cap must rest on rock-free sand and not the conduit. Position the cap at least 6 inches above the conduit. The top of the cap must be a minimum of 8 inches below grade level. The width of the cap must be the same width as the trench.

the conduit. The cap must be a minimum of 3 inches thick and made from a cement-slurry mix. The mix must consist of a two-sack sand slurry, with red dye mixed in. The cap must rest on rock-free sand and not the conduit. Position the cap at least 6 inches above the conduit. The top of the cap must be a minimum of 8 inches below grade level. The width of the cap must be the same width as the trench.

When backfilling trenches on slopes or grades, bags of concrete and red dye may be required on top of the conduit to prevent the backfill from moving down the slope or running out of the trench.

Soil compaction density must be 90% to 95% and meet PG&E’s and any applicable Federal, State, County and local requirements. PG&E-specific soil compaction requirements are as follows:

A. Trenches that run across or along public roads and streets in the franchise areas must have soil compacted to a minimum of 95% density.

B. Trenches that run across private roads and streets in non-franchise areas must have soil compacted to a minimum of 90% density.

C. When PG&E requires a compaction test report for trenches or equipment pads, the testing must be performed by a qualified testing company and the report must include the testing company’s information (i.e., Name, Address, Contact Information).

All of these requirements are at the discretion of the PG&E inspector. See PG&E’s Joint Trench Configurations & Occupancy Guide for additional backfill and trenching requirements. For PG&E-approved import material, see Engineering Material Specification (EMS) 4123, “Backfill Sand.” Both are located in Appendix B.

3.3.7. Providing Drainage from the Conduit System

In some conditions, water can enter the wire and conduit system and migrate into the meter panel and/or building. The applicant or applicant’s contractor must provide a means to discharge any excess water or water pressure from the conduit system.

The most common method required for discharging water from the conduit is installing a box outside near the base of the riser to the meter panel. Alternate locations may be required by the PG&E inspector or PG&E project coordinator. Any other methods of discharging water will require PG&E’s approval before construction begins. For indoor electric meter rooms below grade or at grade level, additional methods of water drainage should be incorporated into the design of the meter room(s) to prevent the accumulation of water.

2022 – 2023 3-16

Section 3, Electric Service: Underground

3.3.8. Installing Joint Utility Service Trenches

When installing electric services underground, the PG&E gas service pipe and the electric service lateral typically are installed in a common, joint trench. A joint trench also may include telephone and cable television facilities.

Applicants should be aware that wet utilities must always be separated from the electric and gas service trench, meters, and risers. Wet utility facilities are not permitted in a joint trench. Wet utility piping or facilities include, but are not limited to, water, bioswales, storm sewer, sanitary sewer, steam, liquid fuels, oil, diesel, sprinkler, irrigation, spigots, downspouts, drain or leach lines, propane, or lines for other liquids or volatile, heavier-than-air

gases.

There are additional requirements for separating a wet utility from a joint trench along with the electric and gas meters and service risers.

Applicants must submit a written request to PG&E when they want to include other facilities in a joint trench. The request must include a justification and be submitted to PG&E for review and approval before excavation or work begins.

PG&E must coordinate joint trench installations with telephone, cable television, or other facilities. This coordination requires lead time, so applicants should submit their requests and justifications as early in the planning process as possible. Applicants must ensure that PG&E has reviewed and approved their trenching plans before digging begins.

Figure 3-6 on Page 3-18 illustrates a “Typical Joint Service Trench.” Separation and clearance details for the trenches are found in Table 3-1 on Page 3-19. Also, see PG&E’s Joint Trench Configurations & Occupancy Guide located in Appendix B of this manual. This guide contains additional information and joint trench requirements. For PG&E-approved import material, see Appendix B for Engineering Material Specification EMS-4123, "Backfill Sand."

PG&E-approved import material, see Appendix B for Engineering Material Specification EMS-4123, "Backfill Sand."

When applicants plan to use joint service trenches, they must ensure that the gas and electric meters are installed either adjacent to, or in close proximity to, each other. Section 5, “Electric Metering: General;” Section 6, “Electric Metering: Residential;” and Section 7, “Electric Metering: Nonresidential, Industrial, and Agricultural,” provide information about determining acceptable locations for utility electric meters. Section 2, “Gas Service,” Subsection 2.4.2, “Gas Meter-Set Locations,” on Page 2-20, provides information about determining acceptable locations for utility gas meters.

Applicants must discuss the service arrangements and coordinate the meter locations and joint trench requirements with a PG&E project coordinator before installing utility conduits or gas service piping.

Applicants must ensure that when multiple service facilities (i.e., gas, electric, and telecommunications) are installed in close proximity (e.g., in a joint trench), a 12-inch minimum, radial separation is maintained where those facilities transition from below ground to above ground.

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Section 3, Electric Service: Underground

3.3.8. (continued)

PG&E allows an exception to that rule when the separation is between PG&E secondary, electric-service conduit and gas-service piping. In this instance, the minimum separation distance may be reduced to 6 inches. Clearances between other facilities can be reduced only when the facility owners reach a mutual agreement.

When electric underground facilities cross under or over gas facilities, the minimum vertical separation between these facilities is 6 inches. The electric and gas facilities should cross at an angle between 45 degrees to 90 degrees. Crossings less than 45 degrees are considered to be parallel and require the minimum horizontal clearance between the two facilities.

12” Minimum

Figure 3-6 Typical Joint Service Trench

Notes in reference to Figure 3-6 and Figure 3-7.

1. Trench depth will vary depending on conduit size.

Figure 3-7 PG&E Electric and Gas Service Trench

2. Soil compaction must meet PG&E’s and any applicable federal, state, county, and local requirements.

3. All separation and clearance dimensions must be met in Table 3-1 on Page 3-19.

4. For more information on Figure 3-6, see PG&E’s Joint Trench Configurations & Occupancy Guide,

located in Appendix B.

2022 – 2023 3-18

Section 3, Electric Service: Underground

3.3.8. (continued)

Table 3-1 Minimum Separation and Clearance Requirements for Trenches [1]

1 All separation clearance distances are in inches. 2 For more information about this table, seeConduit in Joint Trench,” in Appendix B of this manual.PG&E Bulletin TD-5453B-002, “Updated Separation Requirements for

3 Streetlight circuits not owned by PG&E must be installed to meet the requirements in PG&E’s Joint Trench

Configurations & Occupancy Guide . Specifically, applicants must review the requirements for working with a second utility company.

4 Must be considered a “utility” as defined in PG&E’s Joint Trench Configurations & Occupancy Guide .

Applicants must ensure that adequate amounts of space exist to maintain and operate the facilities. Applicants must ensure that the area immediately behind the gas meter, service facilities, and risers and between those facilities and the premises or structures being served is kept free and clear of all other facilities or equipment such as pipes, wires, cables, or conduits. See Section 2, Figure 2-19, “Electric and Gas Meter Set Separation Dimensions and Clearances,”on Page 2-33.

N OTE : Applicants should consider installing conduit one size larger than the required minimum in case larger cable is required or needed for future upgrades. Refer to Subsection 1.14., “Determining the Service Rating,” on Page 1-15, for a description of the methods PG&E uses to determine the ampacity (capacity) rating of customer equipment.

3.3.9. Providing a Service - Termination Facility

In addition to the requirements in Table 3-1, above, applicants must provide and maintain a satisfactory termination facility on or within the building or structure to be served.

PG&E will not install services supplied from different electrical sources in the same termination facility unless the services are separated using suitable barriers. When two or more services are in one termination facility, the minimum dimensions of each compartment created by the barriers must be the same as if each compartment were a separate termination facility.

N OTE : See new service and current transformer (CT) installation requirements in Section 5, Subsection 5.2.4., “Requirements for Installing Secondary Terminations − ” (0 600 Volts) in Metering Equipment Requiring CTs, on Page 5-4.

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Section 3, Electric Service: Underground

3.3.10. Bioswales and Large, Wet Locations

A bioswale is a long, channeled depression or trench that receives rainwater runoff and uses vegetation and organic matter to slow water infiltration and filter-out pollutants. A bioswale is considered a wet location and applicants must not install PG&E facilities that go through or close to a bioswale. Bioswale areas should be avoided and PG&E facilities should be designed to go around them. If applicants cannot avoid a bioswale area, they must apply additionally protective methods when designing PG&E facilities. Also see Numbered Document 038193, located in Appendix C.

3.3.11. Replacing Non-Standard Underground Services

When applicants are relocating or upgrading their electric meter panels and they have existing, non-standard Cable in Conduit (CIC) or Direct Buried (DB) cable, it must be replaced with new PG&E service cable installed in approved service conduit. The new service and conduit run must extend from the new electric panel or termination enclosure location back to the distribution splice box or transformer.

Do not install a splice box along the path of the existing, non-standard DB or CIC cable, between the PG&E secondary distribution system and the panel or termination location, to shorten the length of the new service and conduit. This excludes installing boxes along the new service run near the meter panel to prevent the accumulation of excess water in the service conduit system.

3.4. Electric Underground Documents

Applicants that are performing underground construction should refer to the electric underground numbered documents that are provided at the back of this manual in Appendix C. See PG&E’s Internet website at www.pge.com/greenbook to access the most recent versions of these documents or contact your local PG&E project coordinator. Most of these documents also are available in PG&E Manual TD−2502M, Electric Underground Construction Manual, Book 1 .

3.5. Mandrels

The following section includes both an overview of, and a procedure for using, PG&E-approved, flexible-steel mandrels to prove conduit systems.

A. Using Mandrels to Prove Conduit Systems

Applicants must ensure that the conduit systems required for PG&E cables and/or conductors are installed in a trench that meets all of PG&E’s requirements and specifications for the particular job or project. The conduit systems must meet PG&E’s requirements for each specific installations, as well.

N OTE : The term “conduit system” includes conduits, conduit bends, conduit fittings, and all related components (e.g., bell ends and cable protectors) that are needed to install PG&E cables and conductors.

2022 – 2023 3-20

Section 3, Electric Service: Underground

3.5. (continued)

Applicants must ensure that conduit systems are not covered or hidden from view before the facilities are inspected visually by a PG&E field inspector. The inspector must determine if the conduit system and its installation comply with all of PG&E’s specifications (e.g., type, size, schedule, radius of bends) and installation requirements before the customer backfills the trench.

After the conduit system passes PG&E’s visual inspection, including visual verification of the conduit system’s materials and the radius of the bends, the applicant must backfill the trench and compact the soil. Then, the applicant must provide PG&E with proof that the conduit system is in compliance by successfully inserting and pulling an approved, flexible-steel mandrel through the entire conduit system.

The PG&E inspector remains onsite to ensure that the appropriately sized and approved, flexible-steel mandrel is inserted and pulled through the length of the conduit system without encountering blockages or obstructions.

The applicant must provide the mandrel and follow the procedures for using the mandrel provided in Subsection 3.5.B. on Page 3-21.

The applicant must provide polyester pull-tape (Code 560154) to initiate the cable pulling. For spare conduits that will be vacant for 30 days or longer, install detectable pull-tape (Code 602679) so the spare conduit can be identified during mark and locate field work.

N OTE : For HDD projects, applicants or their contractors must contact PG&E before construction begins. See Subsection 3.2.2.G. on Page 3-3 for information about drilling projects.

B. Procedure for Using Mandrels

Applicants must follow the procedural steps below when using a mandrel to prove a conduit system.

Step 1. Select the mandrel that is sized properly for the type of conduit that will be proven. See Figure 3-8, “Flexible Steel Mandrel,” on Page 3-22, and Table 3-2, “Mandrel Dimensions, Part Numbers, and Order Codes,” on Page 3-23, for mandrel specifications.

N OTE: For high-density polyethylene (HDPE) continuous conduit only (i.e., 3-inch, 4-inch, 5-inch, and 6-inch HDPE), use the next smaller-size mandrel shown in Table 3-2 on Page 3-23.

Step 2. To pull the mandrel through the conduit, securely tie one end of the 2,500-pound pulling tape to the pulling eye of the mandrel. (The pulling tape was installed in the conduit previously.)

Step 3. Securely tie a second section of 2,500-pound pulling tape to the pulling eye located on the other end of the mandrel. This section of tape must be long enough to replace the pre-installed pulling tape completely.

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Section 3, Electric Service: Underground

3.5. (continued)

Step 3. ensures that a run of pulling tape remains in the conduit after the mandrelling process is completed. Also, if the mandrel becomes blocked or stuck in the conduit, the second run of pulling tape allows the mandrel to be pulled back out of conduit and provides a means of measuring the distance to the point of blockage.

Step 4. After both pulling tapes are attached securely to the mandrel, insert the mandrel into one end of the conduit. Slowly start to pull the pulling tape at the opposite end of the conduit. This removes any slack in the pulling tape.

Step 5. Slowly pull the mandrel through the conduit by hand or non-mechanically. The rate of the pull should not exceed 100 feet per minute. Both the person pulling the tape and the PG&E inspector must check the pulling tape for signs of stress (i.e., molten plastic) as the tape comes out of the conduit.

N OTE: The PG&E inspector may not approve a section of the conduit if any portion of the pulling tape shows damage in the form of molten plastic. If the inspector decides to reject the conduit section, he or she will secure the melted section of pulling tape as evidence.

If the mandrel passes through the conduit without encountering any blockage or obstructions, the PG&E inspector approves the conduit section for use.

D

Notes in reference to Figure 3-8.

Figure 3-8 Flexible Steel Mandrel

1. The length must be adequate for the mandrel to pass through a 24­inch radius bend (all sizes).

2. The disks must be fabricated from 1/2­inch, flat, steel plate (average weight: 490 pounds per cubic foot) with a 7/16­inch hole for the 3/8­inch cable.

3. The spacers must be fabricated from 1/2­inch iron pipe size (IPS) pipe with a minimum inside diameter of 0.6 inches.

4. Cable size: 3/8­inch, 6 x 19 mild, plow­steel hoisting rope.

5. The outside diameter of the eye must not exceed Dimension A.

6. The size must be stamped permanently into one end of the plates.

2022 – 2023 3-22

Section 3, Electric Service: Underground

3.5. (continued)

Table 3-2 Mandrel Dimensions, Part Numbers, and Order Codes [1]

1 For HDPE continuous conduit only (3-inch, 4-inch, 5-inch, and 6-inch HDPE), use the next-smaller-size mandrel. 2 “D” dimensions are approximate. 3 PG&E’s approved mandrel manufacturer is DCD Design & Manufacturing.

Table 3-3 Businesses That Sell or Rent Mandrels [1,] [2]

1 Mandrels must be from the approved manufacturer listed in Table 3-2 on Page 3-23 (DCD Design & Manufacturing). 2 This table is provided as a general reference to companies that may sell or rent PG&E-approved mandrels to customers. These companies may be located in cities other than those listed in this table.

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Section 3, Electric Service: Underground

This Page Intentionally Left Blank

2022 – 2023 3-24

Section 4

Electric Service: Overhead

4.1. Scope

This section of the manual provides instructions and minimum clearance requirements for attaching permanent, overhead services to residential and nonresidential properties. The term “residential” includes mobile homes installed on foundations in locations other than mobile home parks.

N OTE : Requirements for installing and attaching PG&E overhead services may be different than local city or county ordinances, as well as national or California electric codes. Contact your local PG&E project coordinator if you have questions. See Table FM-1, “Service Planning Office and Inspection Desk Contact Information,” at the front of this manual starting on Page iv, for specific contact numbers listed by area.

4.2. General

Pacific Gas and Electric Company (PG&E) will not supply new overhead services to applicants when either of the following conditions exist:

A. When buildings or premises are located in areas designated either by local jurisdictions or by PG&E as underground districts.

B. When buildings or premises are located in areas zoned for nonresidential or residential use and the installed service equipment and/or load requires PG&E to use a 75-kilovolt ampere (kVA) or larger transformer.

4.2.1. Safety Reminder

C AUTION

F LAME RESISTANT ( FR ) CLOTHING IS REQUIRED WHILE WORKING ON, WORKING

NEAR, OR OBSERVING OTHERS WORKING ON ANY PG & E FACILITY.

4.3. Locating Overhead Services

4.3.1. Point of Attachment

In areas served from overhead lines, PG&E installs an overhead service drop from the Company’s distribution line to a point of attachment on the applicant’s residence, building, or structure. PG&E follows the guidelines listed below to ensure the service is installed safely and efficiently.

A. The point of attachment must be located so it can be reached with a single span from PG&E’s facilities.

B. The span should not cross over adjacent property, if possible.

C. The span must maintain the required, vertical, clearance-to-ground.

4-1 2022 – 2023

Section 4, Electric Service: Overhead

4.3.1. (continued)

The point of attachment may be either on the building wall near the PG&E line or on a periscope fixed to the building’s roof, usually not more than 18 inches in back of that wall. Figure 4-1 below provides more information about the point of attachment.

Applicants must consult PG&E before installing the building’s wiring. PG&E must approve of the location selected for the utility service attachment.

Street, Alley, Easement, etc.

Preferred Locations for Service Attachment, See Note 1

18” (See Note 3)

18” (See Note 3)

f
Alternate Locations
Residence or Building

Walls on which service-drop attachments are permitted.

Roof areas in which periscope-type services are preferred. Roof areas in which periscope-type services are permitted.

Figure 4-1 Preferred and Alternate Locations for the Overhead Service Drop Attachment (see Note 2)

Notes in reference to Figure 4-1.

1. Applicants can attach service drops to sidewalls if the service-drop conductors do not exceed 75 feet. Service-drop conductors must not cross over an adjacent property. Finally, applicants must ensure that the required conductor clearances and accesses to the electric meters are maintained.

2. For more information on meter location requirements, see Section 5, “Electric Metering: General;”

Section 6, “Electric Metering: Residential;” and Section 7, “Electric Metering: Nonresidential, Industrial, and Agricultural” (as applicable). For available short-circuit current information and requirements, see Subsection 5.7.2., “Main Service Disconnect Switch Rated for Amperes Interrupting Capacity (AIC),” on Page 5-31.

3. The required maximum setback affects nonresidential customers only. The preferred maximum setback is for residential installations, but is not required.

2022 – 2023 4-2

Section 4, Electric Service: Overhead

4.3.2. Two or More Buildings on One Lot

If more than two dwellings or buildings are located on the same lot, applicants must consult PG&E to determine acceptable service attachments and meter locations before wiring the buildings.

Typically, PG&E installs only one service lateral to a single building on one premise, or to one enterprise (with either one building or multiple buildings) on a single premise. However, PG&E may provide more than one service lateral under the following circumstances:

  - Where it is allowed or required by PG&E’s tariff schedules

  - For PG&E’s convenience

  - Where it is required by ordinance

  - When it is installed as a special facility

4.4. Service Drop Clearances

N OTE : See Table FM-1 starting on Page iv, for specific contact numbers listed by

area.

Applicants can request a PG&E project coordinator to specify a location for service drop attachments. When PG&E selects the location, applicants are assured that the service conductors will maintain the required clearances above thoroughfares and structures, as well as the required clearances away from windows, doors, and building exits.

The minimum clearances from the ground, structures, and other objects for overhead service drops are specified in the California Public Utilities Commission’s (CPUC’s) General Order (G.O.) 95, Rules for Overhead Electric Line Construction. Figure 4-2 through Figure 4-20 list and illustrate these minimum clearances.

ad service drops are specified in the California Public Utilities Commission’s (CPUC’s) General Order (G.O.) 95, Rules for Overhead Electric Line Construction. Figure 4-2 through Figure 4-20 list and illustrate these minimum clearances.

Applicants must ensure that the elevation at the point of attachment is high enough to maintain all of the required vertical clearances. Applicants should allow for normal conductor sag when determining these vertical clearances.

G.O. 95 allows the vertical clearance restrictions for service drops to be reduced in certain instances. PG&E’s review and approval is required before any reductions in vertical clearances are allowed. Applicants should contact PG&E as soon as possible in the planning phases of their projects to ensure that any potential problems or exceptions are addressed before construction begins.

Requirements for installing and attaching PG&E overhead services may be different than local electrical codes.

4-3 2022 – 2023

Section 4, Electric Service: Overhead

4.4. (continued)

Vehicular Traffic (See 4.4.1.B.2. on Page 4-5)

or Roadway

Figure 4-2 Ground Clearances for Supply Service Drops, 0 Volts Through 750 Volts, Residential Installations (Required by the CPUC)

4.4.1. Vertical Clearance for Residential, Overhead Service

A. Clearance Above Rails

Applicants must ensure that the following clearances are maintained when requesting electric service be placed over train or trolley tracks.

1. Crossing above railroad tracks without overhead trolley wire: 25 feet

2. Crossing above railroad tracks with overhead trolley wire:

         - Above rails where freight cars are transported: 26 feet
   
         - Above rails where freight cars are not transported: 23 feet
   

2022 – 2023 4-4

Section 4, Electric Service: Overhead

4.4.1. (continued)

B. Clearance Above Thoroughfares in Public Areas and in Private Communities of 10 or More Residences

Applicants must ensure that the following clearances are maintained when requesting electric service be placed above thoroughfares in public and private communities with more than 10 residences.

1. Crossing above the center portion between points 12 feet horizontal from curbs: 18 feet

2. Crossing at the curb line (from the level of the street, not the sidewalk): 16 feet

3. Crossing where there are no curbs: applicants must consider the curb line as the outer limit of possible vehicular traffic: 16 feet

C. Clearance Over Residential Property

Applicants must ensure that the following clearances are maintained when requesting electric service be placed over residential property.

1. Crossing over private roads and other areas accessible to agricultural equipment: 15 feet

2. Crossing over agricultural equipment: maintain 16 feet, if possible

3. Crossing over private driveways or other areas accessible to vehicles: 12 feet

4. Crossing over areas accessible to pedestrians only: 12 feet

D. Clearance from Communication Service Drops

Applicants must ensure that the following clearances are maintained when requesting electric service be placed over communication service drops.

1. Normal radial clearance: a minimum of 24 inches.

2. Within 15 feet of the point of attachment on a building or structure: the normal radial clearance may be reduced to a minimum of 12 inches.

E. Clearance from Swimming Pools

Avoid installing utility service drops above public and private swimming pools, when practical.

The CPUC, not local agencies or codes, regulates, by its adoption of G.O. 95, the installation and clearances of utility-owned, operated, and maintained supply lines and service drops. G.O. 95 contains specific requirements for installing and maintaining utility supply-line and service-drop clearances above swimming pools. Figure 4-3, “Minimum Clearance for All Drops Above or Adjacent To Swimming Pools,” on Page 4-6, illustrates the minimum-permitted clearances mandated by G.O. 95 where utility service drops are installed above swimming pools.

N OTE: Table 4-1, “Minimum Clearances Over Swimming Pools,” on Page 4-6, also provides clearance information for drops located either above or adjacent to swimming pools.

4-5 2022 – 2023

Section 4, Electric Service: Overhead

4.4.1. (continued)

A A A A

B

B

B

B

Side View

Top View B

Figure 4-3 Minimum Clearance for All Drops Above or Adjacent To Swimming Pools

Table 4-1 Minimum Clearances Over Swimming Pools [1]

1 Clearance requirements may be different than local electrical codes.

2022 – 2023 4-6

Section 4, Electric Service: Overhead

4.4.2. Clearance Above Buildings

Table 4-2, “Minimum Allowable Clearance of Service Drops from Buildings−0 Volts Through 750 Volts,” below, lists the required clearances for buildings that are receiving electric service.

Table 4-2 Minimum Allowable Clearance of Insulated Service Drops from

1 Weather-resistant, covered conductors are Construction Requirements for Supply Lines,Clearance of Service Drops of 0–750 Volts from Buildings, not ” Rule 54.8, used in new installations. See“Service Drops, 0” for insulated conductor clearances.–750 Volts, G.O. 95 , Section V, ” Table 10, “Minimum Allowable“Detailed

2 Not less than 1/2 inch for residential services. Not less than 12 inches for nonresidential services as shown in Figure 4-13 through Figure 4-20 on Page 4-13.

3 An applicant must ensure that the service drop’s point of attachment for industrial and nonresidential premises is no more than 18 inches. Take this measurement from behind the front face of the building wall facing the pole line from which the service drop originates.

4 Clearance requirements may be different than local electrical codes.

5 Reduce to 2 feet for nonmetallic roofs when the roof slope exceeds 9 inches of rise per 12 inches of run. (See Figure 4-4, “Nonmetallic Roof,” below.)

Run = 12“

Rise = 9“

Figure 4-4 Nonmetallic Roof

4-7 2022 – 2023

Section 4, Electric Service: Overhead

4.4.3. Clearance at the Residential Point of Attachment

PG&E recommends that applicants do not locate electric supply and communication services in the same vertical plane. Figure 4-11, one of the “Clearance at the Residential Point of Attachment” illustrations on Page 4-9, shows the recommended arrangement for the communication service drop.

A. Typically, applicants the service drop is attached below the level of the service weatherhead; however, it may be attached above the service weatherhead, as shown in Figure 4-7 and Figure 4-9, both located on Page 4-9, if the two following situations exist.

1. It is impractical to attach the service drop below the level of the service weatherhead.

2. The service-drop conductor’s attachment point is located 24 inches or less from the service weatherhead.

B. Applicants must ensure that the line length of the open wiring (i.e., drip loop) between the point of service attachment and service weatherhead does not exceed 3 feet.

C. Applicants must ensure that the clearance requirements for the PG&E overhead service are met. These clearances may be greater than local electrical codes.

D. PG&E will not attach services to periscope structures made of plastic.

Figure 4-5 through Figure 4-11, all representing “Clearance at the Residential Point of Attachment,” provide examples of clearances for overhead service-drop installations and terminations. These seven figures are located on Page 4-9.

N OTE : For overhead, temporary services, see Numbered Document 025055,

“Requirements for Customer-Owned Poles,” in Appendix C, “Electric and Gas Engineering Documents.”

N OTE : Refer to Numbered Document 094676, “Primary Electric Service

Equipment,” in Appendix C, for technical information on primary services.

2022 – 2023 4-8

4.4.3. (continued)

Nonmetallic Roof

Wood Block 1-1/2” Min. Thickness

Section 4, Electric Service: Overhead

Nonmetallic Roof

Drip Loop 3’ Max.

See Figure 4-2 See Figure 4-2 Wood Block on Page 4-4 See Figure 4-2 on Page 4-4 1-1/2” Min. on Page 4-4 Thickness

Figure 4-5 Figure 4-6 Figure 4-7

Nonmetallic Roof

Drip Loop 3’ Max.

Figure 4-8 Figure 4-9

Communication Service Drop

12” Min.

PG&E Service Drop

Service Delivery Point at Point of Attachment

Applicant Service-Entrance Conductors

Figure 4-10 Figure 4-11

Clearance at the Residential Point of Attachment

4-9 2022 – 2023

Section 4, Electric Service: Overhead

4.4.4. Vertical Clearance on Nonresidential Property

Table 4-3, “Vertical Clearance from the Ground on Nonresidential Property,” located below, provides the minimum vertical distance (in feet) from the ground on nonresidential property.

Applicants must ensure that periscope attachment structures are constructed with one of the following, approved materials.

  - 1-1/4-inch minimum, galvanized rigid steel (GRS) or intermediate

metal conduit (IMC) rigid steel

  - 2-inch minimum rigid aluminum conduit measured in iron pipe

size (IPS) dimensions

PG&E will not attach a span to plastic periscope structures.

Periscope extensions projecting above the roof may require bracing against the pull of the service-drop conductors, as shown in Figure 4-39, “Unbraced Periscope Structure (Residential and Nonresidential),” on Page 4-23.

Typically, the service drop is attached below the level of the service weatherhead; however, it may be attached above the service weatherhead if both of the following situations exist.

  - It is impractical to attach the service drop below the level of the service

weatherhead.

  - The attachment point on the service-drop conductors is located less

than 24 inches from the service weatherhead.

Ensure the length of the open-wire drip loop does not exceed 3 feet.

PG&E connects the Company’s service conductor and an applicant’s service-entrance conductor below the service weatherhead.

Table 4-3 Vertical Clearance from the Ground on Nonresidential Property [1]

1 Clearance requirements may be different than local electrical codes.

A. Clearance from Communication Service Drops

Applicants must ensure that the following clearances are maintained when requesting electric service to be placed over communication service drops.

1. Normal radial clearance: a minimum of 24 inches.

2. Within 15 feet of the point of attachment on a building or structure: the normal radial clearances may be reduced to a minimum of 12 inches.

2022 – 2023 4-10

4.4.4. (continued)

Section 4, Electric Service: Overhead

Curb or Outer Limits of Possible Vehicular Traffic

Figure 4-12 Ground Clearances for Supply Service Drops, 0 Volts Through 750 Volts, Industrial and Nonresidential Installations (Required by the CPUC)

Figure 4-13 through Figure 4-20, all representing “Clearances for Nonresidential Buildings Using Insulated Conductors” and all located on Page 4-13, show overhead service drops and vertical-clearances, as measured from the ground, for nonresidential and industrial installations and large residential buildings.

4.4.5. Clearances for a Nonresidential Building Service Drop Using Cable or Equally Insulated, Open-Wire Service Conductors

Applicants can use the clearances shown in Figure 4-13 through Figure 4-20 only when they use Type N-SD service-drop cable, or equally insulated cable, open-wire service conductors. Applicants must not use weatherproof-rated conductors.

Figure 4-12, “Ground Clearances for Supply Service Drops, 0 Volts Through 750 Volts, Industrial and Nonresidential Installations (Required by the CPUC),” located above, provides the required clearances from a service drop to the ground.

4-11 2022 – 2023

Section 4, Electric Service: Overhead

4.4.5. (continued)

Figure 4-21, “Clearance Around Windows,” and Figure 4-22, “Clearance Around Doors,” both located on Page 4-14, provide applicants with the required clearances from fire escapes, exits, windows, doors, and other locations where people could be present.

Applicants must use a 1-1/4-inch minimum GRS or IMC rigid steel, or 2-inch minimum rigid aluminum conduit (IPS dimensions) for all periscope attachment structures. See Figure 4-13, Figure 4-14, Figure 4-15, Figure 4-19, and Figure 4-20, all representing “Clearances for Nonresidential Buildings Using Insulated Conductors,” on Page 4-13, for examples.

The clearances shown in Figure 4-13 through Figure 4-20 only apply to insulated services, up to a 750-volt maximum, over nonmetallic roofs or decorative appendages. Applicants also should refer to the service-entrance, conductor-clearance requirements found in the State Building Standards Electrical Code .

The special 24-inch minimum clearance, illustrated in Figure 4-20, is applicable only to service-drop cable.

Either brace the periscope attachment structures as shown, or ensure that the structures are supported using similar, acceptable methods. For more information on bracing periscope attachment structures, see Figure 4-34 and Figure 4-35, both representing “Service to Nonresidential Premises,” and both on Page 4-18. Also, see Figure 4-38, “Braced Periscope Attachment Structure,” on Page 4-20, and Table 4-5, “Maximum Mast Height Above the Roof Without Bracing,” on Page 4-23.

2022 – 2023 4-12

4.4.5. (continued)

Service Drop

18” from the Edge of the Eaves

Section 4, Electric Service: Overhead

Service Delivery Point at Point of Attachment

Service Drop

12” Min. 12” Min. 12” Min.

Building Wall More Than 18” from the Max .

Not More Than 18” from Building the Face of the Wall) Wall Facing

Pole Line

Building Wall Facing Pole Line

More Than 18” from the Edge of the Eaves (but Not More Than 18” from the Face of the Wall)

Figure 4-13 Figure 4-14 Figure 4-15

Service Drop

Service Drop

Service Delivery

Point at Point

Cornice, Parapet Wall, and Roof

Facing Pole Line

Specified

Building Wall Facing Pole Line

Building Wall of Attachment

Building’s

Facing Pole Line Covered Protection

Figure 4-16 Figure 4-17 Figure 4-18

Main Building Wall Facing P ole Line

Column or Support (Not a Building Wall)

Wall Facing Pole Line

or Patio Cover

Figure 4-19 Figure 4-20

Clearances for Nonresidential Buildings Using Insulated Conductors (0 Volts–750 Volts)

4-13 2022 – 2023

Section 4, Electric Service: Overhead

4.4.6. Clearances Around Doors and Windows

Service drops are not required to clear buildings by any specified horizontal distance; however, applicants must ensure that the service weatherhead, the service drop, and the open wires between the service weatherhead and the service drop maintain the following clearances from fire escapes, balconies, stairways, exits, doors, windows, and other locations where people could be present.

A. Wires that are either at or below the level of the top of exits, doors, windows, and other openings must have a radial clearance from the boundaries of such openings of not less than 3 feet, as shown in Figure 4-21 below.

B. Wires less than 8 feet above, or 3 feet below, the surface levels of fire escapes, balconies, porches, stairways, and walkways must have a minimum horizontal clearance of at least 3 feet from such surfaces, as shown in Figure 4-22 below.

ÔÔ

36” Min.

ÔÔ

36” Min.

Ô
Ô
36” 8’0” Min. 36”
Min. Min.
ÔÔ
ÔÔ
ÔÔ

Figure 4-21 Clearance Around Windows

Figure 4-22 Clearance Around Doors

4.4.7. Clearance Between Service Drop Wires

The minimum-allowable radial clearance between service drop sites (i.e., 0 volts through 750 volts) in the span from the pole to the building, and a point of attachment to the building, is 3 inches. Applicants must ensure that wire supports at the building are spaced 8 inches apart, where practical.

2022 – 2023 4-14

Section 4, Electric Service: Overhead

4.4.8. Clearance from Applicant-Owned Service Poles

Building

See Figure 4-2 on Page 4-4

on Page 4-11 A Service Pole Detached

Min. Size

6” x 6”

Min. Size

Ground

Figure 4-23 Service Attachment Structure or Service Pole Secured to a Building

4.5. Service Attachments

Figure 4-24 Service Pole Detached from a Building

Applicants must ensure that utility service drops (i.e., 0 volts through 750 volts) are not attached directly to metal roofs.

4.5.1. Attaching Low-Voltage, Residential, Overhead Service Drops

Applicants must ensure that the service drop’s point of attachment to the building is high enough to provide the minimum legal clearances shown in Figure 4-2 on Page 4-4.

Subsection 4.6., “Attachment Structures (Periscopes),” on Page 4-21, provides information on installing and using periscopes as attachment

structures.

Whenever practical, attach the service drops below the level of the service weatherhead, as shown in Figure 4-29, “Cable (Single Spool),” and Figure 4-30, “Open Wire or Cable (Cable Shown),” both of which are on Page 4-16, and Figure 4-39, “Unbraced Periscope Structure (Residential and Nonresidential),” on Page 4-23.

In all installations, PG&E connects to the applicant’s service-entrance conductor below the level of the service weatherhead. Drip loops are included at the entrance of each conductor to the service weatherhead. These drip loops prevent moisture from penetrating the installations.

The standard service attachments shown in Figure 4-25 through Figure 4-30, all representing “0-Volt Through 300-Volt Service at Residential Premises,” on Page 4-16, are designed according to the CPUC’s State Building Standards Electrical Regulations to California electrical code and to PG&E requirements. Local authorities may have additional requirements.

4-15 2022 – 2023

Section 4, Electric Service: Overhead

4.5.1. (continued)

N OTE : PG&E will attach a service knob to a stud (e.g., 2 inch x 4 inch) or rafter, if possible. PG&E will not mount the service knob directly to the roof or attach it to corner trim or roof trim without a 2-inch x 4-inch stud or larger. Figure 4-36, “Building Attachment–Service Knob,” Detail A, on Page 4-20, provides the requirements for attaching service knobs.

Service Knob. Screw

Figure 4-25 Open Wire

Figure 4-26 Open Wire or Cable (Open Wire Shown)

Service Knob. Screw Through

8” Min. 2” x 4” Backing, Overhang

Triplex

Where Required

Nonmetallic Roof

Figure 4-27 Figure 4-28 Open Wire or Cable (Open Wire Shown) Cable (Using Triplex)

Single-Spool Periscope Fitting

1-1/4” Rigid Steel Conduit or 2” IPS

Aluminum

Pipe Strap

Exposed Overhang. Do Not Use This

Construction Where Overhang Is Boxed In

Bore Through Roof Plate (Conduit Against Stud)

Stud

Figure 4-29 Cable (Single Spool)

Figure 4-30 Open Wire or Cable (Cable Shown)

0-Volt Through 300-Volt Service at Residential Premises

2022 – 2023 4-16

Section 4, Electric Service: Overhead

4.5.2. Attaching Low-Voltage, Nonresidential, Overhead Service Drops

When applicants plan to install service-entrance wiring larger than that shown in Figure 4-31 through Figure 4-34, all representing “Service to Nonresidential Premises” and on Page 4-18, they must consult PG&E before they begin construction to obtain instructions on attaching the wiring properly.

Figure 4-31, “Service Drop Cable, 4/0 and Smaller, Triplex or Quadruplex,” shows applicants how to attach the wiring using service knobs in either concrete or masonry walls. Service knobs must be screwed into wood-frame walls.

Figure 4-32, “New Wall, 1/0 kcmil to 397.5 kcmil Aluminum,” shows applicants how to attach the wires using insulated clevises on concrete walls. For wood-frame walls or masonry walls (e.g., brick, hollow tile, cinder block), applicants must bolt the attachments through the wall. Where service is attached to masonry walls, applicants must install bracing or attachment structures.

When it is practical to do so, applicants must attach service drops below the level of the service weatherhead.

PG&E furnishes the bolts and insulators needed to secure the service drop to the building or attachment structures. Applicants can attach the service drop to the walls or to periscope structures either horizontally or vertically.

The wire sizes shown in Figure 4-31 through Figure 4-35 refer to service drops, not to service-entrance wires.

Open wiring, or drip loop, installed between the service drop attachment and the service weatherhead, must not exceed 3 feet.

Applicants must install periscope structures as illustrated in Figure 4-39 on Page 4-23. See Subsection 4.6. on Page 4-21 for additional information on installing periscopes and using periscopes as attachment structures.

4-17 2022 – 2023

Section 4, Electric Service: Overhead

4.5.2. (continued)

Service Entrance Conduit

Wiring 8”

Expansion Shield

Cable Grip

5/8” Eye Bolt and 2-1/4” Square Washer

ervice
ntrance
iring
rip

Figure 4-31 Service Drop Cable, 4/0 and Smaller, Triplex or Quadruplex

Figure 4-32 New Wall, 1/0 kcmil [1] to 397.5 kcmil Aluminum

5/8” Flush Anchor

Dead-End 1/0 and Larger Conductors

Figure 4-33 New or Existing Wall, 1/0 kcmil [1] to 397.5 kcmil Aluminum

1-1/4” Rigid Steel Conduit or 2” IPS Aluminum Conduit Min.

Service Drop Cable

Braces

Braces

Figure 4-34 Figure 4-35 Open Wire Service, #4 to 397.5 kcmil [1] Aluminum Service Drop Cable

Service to Nonresidential Premises

Note in reference to Figure 4-32, Figure 4-33, and Figure 4-34.

1. kcmil: a thousand circular mils

2022 – 2023 4-18

Section 4, Electric Service: Overhead

4.5.3. Special Service Attachment Requirements: Areas Subject to Heavy Snow Loading

The following special requirements apply to service drops installed in snow-loading areas. PG&E has designed these requirements to minimize storm damage.

A. Applicants must ensure that the span length of triplex or quadruplex service drop cable used in snow-loading areas is 125 feet or less.

B. Applicants should locate the service weatherhead as high as practical to keep the weatherhead clear of deep snow.

C. Applicants should try to attach service drops to house gables, where practical. This type of attachment protects the service and meter equipment from being impacted by snow and ice as it slides off the roof.

D. PG&E will attach a service knob to a stud, if possible. PG&E will not mount the service knob directly to the roof or attach it to corner trim or roof trim. Figure 4-36, “Building Attachment − Service Knob,” Detail A, on Page 4-20, provides the requirements for attaching service knobs.

E. Applicants should install a self-supported, periscope attachment structure according to the requirements specified in Subsection 4.6. on Page 4-21 and Table 4-4, “Maximum Distance ‘L’ (Inches from the Service Attachment to the Top Periscope Support),” on Page 4-20.

Typically, periscope attachment structures that are installed as specified in Subsection 4.6. and Table 4-5, “Maximum Mast Height Above the Roof Without Bracing,” on Page 4-23, provide a sufficiently rigid service-drop support to withstand the expected snow loading. In areas above 3,000 feet, use the construction methods shown in Figure 4-36, where practical.

4-19 2022 – 2023

Section 4, Electric Service: Overhead

4.5.3. (continued)

Do Not Attach to the Corner or Roof Trim

Wood Backing (Installed by the Builder if the Knob Cannot Be Installed in the Stud)

Sheathing

Drill a 5/16” Diameter Hole Through the Siding to Prevent Splitting. Drill a 1/4” Diameter Pilot Hole, When Necessary

in the Slide Area Below the Roof Detail A

Figure 4-36 Building Attachment–Service Knob

Load Center

See Table 4-4 Below

See the “L” Dimension in Table 4-4 Below Top Periscope Support

Pipe Strap

Stud

Bore Through the Roof Plate (Conduit Against Stud)

Figure 4-37 Figure 4-38 Self-Supported Periscope Attachment Structure Braced Periscope Attachment Structure

Table 4-4 Maximum Distance “L” (Inches from the Service Attachment to the Top Periscope Support)

1 GRS: galvanized rigid steel 2 IMC: intermediate metal conduit 3 Brace the periscope as shown in Figure 4-38 to maintain a sufficient clearance over the roof.

2022 – 2023 4-20

Section 4, Electric Service: Overhead

4.6. Attachment Structures (Periscopes)

An attachment structure is a support that connects the service drop to the structure while maintaining the clearances required for the service drop. Applicants must ensure that the service drop maintains the required clearance at its point of attachment to the periscope, mast, or other attachment structure. These clearances are mandated by the CPUC’s G.O. 95 .

PG&E will connect service drops to attachment structures in either one of two

ways.

A. Connect by using either spools or insulators that are installed on a building.

B. Connect by using a single mast constructed of one of the following galvanized rigid pipe or conduit materials.

 - Steel

 - Intermediate metal

- Aluminum

Applicants using Method A must only install a single (one) mast and weatherhead from the electric service termination and metering equipment to the service drop location. Applicants using Method B must only install a single (one) mast, periscope, and weatherhead from the electric service termination and metering equipment to the service drop location. Installing more than one attachment structure is prohibited.

To provide structural support for periscopes, applicants should use a heavy-duty, 2-hole pipe strap every 3 feet, secured by 3/8-inch x 3-inch lag screws (minimum size). Structural support is required at the location shown in Figure 4-39, “Unbraced Periscope Structure (Residential and Nonresidential),” on Page 4-23.

When applicants must install attachment structures to maintain the required clearances, they must contact PG&E for approval before constructing the structures. PG&E must ensure that attachment structures meet all of the applicable legal requirements.

Applicants must install and maintain these attachment structures at their expense.

The attachment structures must be strong enough to support the service drop wires and service attachments. Applicants may use a single (one) service-entrance conduit as the attachment structure. In this case, the periscope must be a minimum 1-1/4-inch GRS conduit or IMC, or 2-inch IPS rigid aluminum conduit. Applicants may not use plastic conduit as an attachment structure. Subsection 4.5.3., “Special Service Attachment Requirements: Areas Subject to Heavy Snow Loading,” on Page 4-19, provides applicants with additional requirements when using attachment structures in snow-loading areas.

When applicants use attachment structures, either on exterior walls or on roof structures, they must ensure the attachment structures provide the required clearances. Additionally, applicants must ensure that buildings are constructed or reinforced to support the weight of the attachment structure and fitting. Buildings must be able to withstand the pull of the service wires. Applicants must furnish all of the materials required to install the attachment structures except the racks, bolts, and insulators needed to secure the service wires. PG&E supplies those parts.

4-21 2022 – 2023

Section 4, Electric Service: Overhead

4.6. (continued)

Attachment structures typically must be installed directly above the service termination and metering equipment, vertically upward to the weatherhead location. The service entrance mast (conduit) should not be installed in either a diagonal or horizontal position unless approved by PG&E. For existing installations where the meter panel is being replaced and relocated away from the gas facilities, or to achieve the minimum-required working space, the mast may be installed horizontally to be able to run back to the existing weatherhead location if it is not changing. Refer to Section 2, “Gas Service,” Figure 2-19, “Electric and Gas Meter Set Separation Dimensions and Clearances,” on Page 2-33, for gas clearance requirements. Any horizontal run of mast (conduit) should not exceed 10 feet and must not be installed on top of the roof. If a new attachment structure is installed, it should be directly above the new service termination and metering equipment.

Applicants may not attach communications conductors, such as those used for telephone or cable television service, to the electric supply’s power-service mast or attachment structure. Applicants can attach only electric-utility, power-supply, service-drop conductors to the electric-supply, power-service masts or attachment structures.

If a new meter panel is planned to be installed next to an existing meter panel and connected to the same overhead service, applicants may not install additional masts and weatherhead and are required to install a sealable gutter in conjunction with a single mast.

4.6.1. Periscope Clearances and Bracing Requirements

Applicants must ensure that periscopes and raceway-type service masts extend a maximum of 78 inches and at least 12 inches above any roof or eave they may penetrate. Applicants may be required to raise periscopes and raceway-type service masts when using them as attachment structures and/or to obtain the appropriate clearances for service drop conductors. For more information, see Figure 4-13 through Figure 4-16, all on Page 4-13. Also, see Figure 4-34, “Open Wire Service, #4 to 397.5 kcmil Aluminum,” and Figure 4-35, “Service Drop Cable,” on Page 4-18. Finally, see Figure 4-36 through Figure 4-38 on Page 4-20.

Applicants may have to brace periscopes that project above the roof lines, as shown in Figure 4-39 and Table 4-5. An acceptable method of bracing is illustrated in Figure 4-34 and Figure 4-35. Table 4-5 lists the maximum periscope heights that applicants can install without bracing for different types of conduit.

The periscope (i.e., mast) height without bracing is limited to 30 inches above the roof in either of the following two locations.

   - **Where the service drop is installed through trees**

   - **Where trees or tree branches may strike or cause unplanned**

loading on the service drop.

Applicants must ensure that unbraced periscopes projecting above roofs or eaves are continuous without couplings from the point where the utility service drop is attached to the periscope to 30 inches below the roof or eave.

2022 – 2023 4-22

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4.6.1. (continued)

When the periscope structure requires support above the roof, applicants must ensure that it is braced, not guyed, as shown in Figure 4-38. The brace must be located as described in Table 4-4. When applicants need to brace periscope structures, the bracing must consist of two galvanized steel members installed at an approximate 90° spread. Braces must consist of a minimum 3/4-inch galvanized steel pipe or 1-1/4-inch x 1-1/4-inch x 1/8-inch galvanized steel angles.

Table 4-5 Maximum Mast Height Above the Roof Without Bracing [1]

1 See Subsection 4.5.3. on Page 4-19 for snow-loading area requirements. 2 GRS: galvanized rigid steel 3 IMC: intermediate metal conduit 4 Periscope height, without bracing, is limited to 30 inches above the roof if the service drop is installed through trees or if tree branches may strike or cause loading on the service drop.

Wood Blocking

Wood Frame

Pipe Strap. To provide periscope

support, a heavy-duty, 2-hole pipe strap every 3 feet, secured by 3/8” x 3” lag screws (minimum size), is required at this location.

Figure 4-39 Unbraced Periscope Structure (Residential and Nonresidential)

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Section 4, Electric Service: Overhead

4.7. Service Weatherheads

Typically, applicants should not locate the service weatherhead on exterior walls that are less than 2 feet from a common property line. The service weatherhead should be higher than the point of service attachment.

Applicable California state laws require applicants to locate the service weatherhead so that they maintain the minimum clearances specified in Subsection 4.4., “Service Drop Clearances,” on Page 4-3, through Subsection 4.5., “Service Attachments,” on Page 4-15. These minimum clearances also apply to the service drop and the open sites between the service weatherhead and the service drop’s point of attachment.

In some instances, applicants may need to install the service weatherhead and related open wires at an elevation greater than the minimum required clearances. Adding the extra height ensures that the installed service drops maintain the required clearances above the ground and any affected structures. Also, the required clearances may be greater than local electrical codes.

A service weatherhead must be located above the service-drop conductor’s point of attachment; however, the service-drop attachment may be located above the service weatherhead if both of the following conditions are met.

A. If it is impractical to attach the service drop below the level of the service weatherhead.

B. If the attachment point on the service-drop conductor is located less than 24 inches from the service weatherhead.

Ensure that the length of the open-wire drip loop does not exceed 3 feet.

4.8. Service-Entrance Conductors

Applicants must furnish, install, and maintain the service-entrance wiring and service equipment beyond the point where it attaches to PG&E’s overhead service drop.

PG&E will only connect to one set (run) of service-entrance conductors exiting the mast and weatherhead. Therefore, applicants must only install one set of conductors in the service conduit. One set or run is a maximum of three conductors for single-phase and four conductors for three-phase services.

The type and size of service-entrance wires must conform to applicable legal requirements and must be approved service-entrance cable. If applicants use an approved service-entrance cable, they must ensure that the service-entrance wires are enclosed either in a single (one) continuous metallic tubing or in rigid conduit of a type and size to conform to applicable requirements, but preferably 1-1/4 inches or more.

N OTE : On periscope-type installations, use a minimum 1-1/4-inch GRS or IMC, or 2-inch IPS, rigid aluminum conduit. It is prohibited to install more than one conduit (mast), periscope, and weatherhead for service-entrance conductors.

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Section 4, Electric Service: Overhead

4.8. (continued)

If applicants use SE-type service-entrance cables between the service weatherhead and meters, they must ensure that the SE-type cables are not concealed. Also, applicants must ensure that service entrances are rain tight by using approved fittings.

In residential and small nonresidential installations, applicants may install short-radius conduit fittings (i.e., LBs, service elbows) in the overhead, service-entrance conduit system.

Because this conduit system penetrates the outer building wall, applicants must install the short-radius conduit fittings with covers that prevent water from penetrating the fittings. The covers also must be sealable by PG&E personnel.

N OTE : Short-radius conduit fittings should not contain splices or taps.

The drip loop is the length of exposed wire between the service weatherhead and the service drop. Applicants must not use more than 3 feet of exposed, open wiring to form the drip loop.

To create drip loops, an applicant should install a minimum 18 inches of service-entrance wiring that extends out from the service weatherhead. In cases where the service-entrance open conductors pass over a roof or firewall with a minimum clearance of 12 inches, applicants must provide enough wire for PG&E to connect to the service drop and to obtain the required 12-inch minimum clearance above the building.

ip loops, an applicant should install a minimum 18 inches of service-entrance wiring that extends out from the service weatherhead. In cases where the service-entrance open conductors pass over a roof or firewall with a minimum clearance of 12 inches, applicants must provide enough wire for PG&E to connect to the service drop and to obtain the required 12-inch minimum clearance above the building.

PG&E connects the Company’s service conductors and the applicants’ service-entrance conductors below the weatherhead.

PG&E furnishes and installs connectors for joining the service-entrance conductors to the service drop. Drip loops must not extend around the corner of a building; however, the service weatherhead may be located on the same face of the building as the service-drop attachment. The service-entrance conduit or cable may be extended around the corner of the building to the meter and service switch.

Do not install conductors other than service-entrance conductors in the conduit leading to the meter.

4.9. Applicant-Owned, Installed, or Furnished Wood Poles

PG&E project coordinators will explain the requirements to ensure that applicants are familiar with the inspection process and requirements for installing and using the wood poles.

For poles that have a final height greater than 20 feet above ground level, the Federal Aviation Administration (FAA) may require the applicant to file a notice a minimum of 45 days before installing the pole. The FAA may issue a determination of hazard to air navigation and recommend actions to mitigate or eliminate the hazard. Please contact your PG&E project coordinator for additional information.

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Section 4, Electric Service: Overhead

4.9. (continued)

After discussing or meeting with project coordinators and finalizing their installation plans, applicants must notify their local PG&E project coordinators before setting wood poles. It is critical that applicants who own, install, or furnish approved wood poles to which PG&E can attach equipment or facilities, or to which PG&E can furnish or supply permanent electric service, meet the requirements of Numbered Document 025055, found in Appendix C. After the applicant installs the pole(s) in the ground, PG&E field inspectors will approve the installation of poles that meet Company requirements.

PG&E field inspectors verify the following, specific requirements for applicant-furnished poles before approving their installation.

A. The poles must be supplied and treated by a PG&E-approved supplier.

B. The applicant must obtain and provide PG&E with a copy of a “Certificate of Treatment” from the pole supplier. That certificate must indicate that the pole was treated according to the requirements of both the American Wood Preserver’s Association and the American National Standards Institute (ANSI).

C. Applicants must ensure that new poles are branded or tagged. This identification must be either 10 feet from the pole butt for poles less than 55 feet long or 14 feet from the pole butt for poles more than 55 feet long. The brand must include the following four identifiers.

- The manufacturer’s name

- The month and year the pole was treated

- The wood species

- The preservative used to treat the pole

D. Poles greater than 40 feet long that will support PG&E primary facilities must be through-bored at the ground line.

E. PG&E must inspect and approve used poles before they are reused (i.e., PG&E facilities are reinstalled on the poles). PG&E-owned poles that have been removed from service and will no longer be used by PG&E cannot be reused as customer-owned poles.

The PG&E field inspector must verify that the poles meet the dimensional and test requirements for reused poles. These requirements are described in PG&E Procedure TD-2325P-01, “Inspecting, Reinforcing, and Reusing Wood Poles.”

If installing overhead temporary services, refer to Numbered Document 025055, found in Appendix C.

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Section 4, Electric Service: Overhead

4.10. Required Vegetation Clearances

The state of California requires electric utilities to keep electric lines (i.e., high-voltage lines) cleared of vegetation. All newly constructed distribution lines and existing lines must meet these requirements.

N OTE : PG&E may determine that the distribution line should be installed underground, or that trees should be removed, if the planned line extension does not meet or exceed the clearance requirements between existing trees and overhead electric lines. See new options for commercial agricultural orchards in Subsection 4.10.5. on Page 4-31.

4.10.1. General Requirements

When establishing new overhead services, and/or when building or remodeling structures near high-voltage lines, poles, or towers, applicants must research planting regulations and follow the rules established here.

N OTE : Applicants must consider safety and access for repairs when planting near an overhead electric service.

A. Where required, applicants must establish clearances as described in

California Public Resource Code (PRC) Division 4, “Forests, Forestry and Range and Forage Lands,” Part 2, Chapter 3, Section 4292. PG&E can exempt applicants if the vegetation around power poles at the completed construction site will be well irrigated, low growing, and not highly flammable in perpetuity. In general, do not plant trees near power poles or

towers.

B. For electric distribution, low-voltage and high-voltage lines rated up to 60,000 volts, applicants must establish a 15-foot “low-growth” zone on both sides of all new lines. Applicants also must ensure that all branches with potential overhang within 4 feet of the conductors are trimmed.

Applicants must not plant trees under or within 15 feet of distribution power poles. Applicants should landscape with low-growth, fire-resistant plants, shrubs, and flowers in the zone under electric power lines. PG&E recommends planting shrubs and flowers in low-growth zones to ensure compliance. Figure 4-40, “Illustration of 15-Foot Clearance, Low-Growth Zone,” on Page 4-28, and Figure 4-41, “Grass and Shrubs Recommended Under Service Wires,” on Page 4-29, illustrate low-growth zones and show how the 15-foot clearance is measured from the center of the pole.

C. For all electric transmission, high-voltage lines rated greater than 60,000 volts, applicants must not plant trees within the right-of-way easement of the transmission poles or towers. Applicants must follow a “no-growth” zone inside rights-of-way areas, including under the electric power lines. The zone outside the rights-of-way areas is a “low-growth” zone, tree-planting zone, and/or a shrub-and-flower planting zone. Figure 4-41, “Grass and Shrubs Recommended Under Transmission Wires,” on Page 4-29, illustrates a no-growth zone.

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Section 4, Electric Service: Overhead

4.10.1. (continued)

D. Applicants must ensure that a thorough inspection is made of proposed construction areas. Dead, dying, diseased, or hazard trees tall enough to fall into the proposed power lines must be removed. Hazard trees are defined as any tree having a structural defect that may cause the tree, or a portion of the tree, to fall either on someone or on something of value.

Figure 4-40 Illustration of a 15-Foot Clearance, Low-Growth Zone

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Section 4, Electric Service: Overhead

4.10.1. (continued)

(No trees allowed. Small shrubs and grass allowed.)

Figure 4-41 Grass and Shrubs Recommended Under Transmission Wires

E. Applicants can contact PG&E’s vegetation management personnel to obtain more information about codes or regulations and to schedule field inspections for construction sites. Vegetation management personnel perform field inspections to identify clearance requirements or hazard trees.

4.10.2. Planning Requirements

When planning and routing, high-voltage, overhead electric lines, applicants must avoid areas with heavy tree growth. See the tree-planting matrix tables (Tables B-1 through B-7 starting on Page B-2) in Appendix B, “Electric and Gas Service Documents.” Building plans should indicate where overhead lines pass within the boundaries of the construction and landscape areas, as shown in Figure 4-40, “Illustration of a 15-Foot Clearance, Low-Growth Zone,” on Page 4-28, and Figure 4-42, “Alternative Routes to a House Showing High-Voltage Lines and Tree-Clearance Zones,” on Page 4-30.

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Section 4, Electric Service: Overhead

4.10.2. (continued)

Figure 4-42 Alternative Routes to a House Showing High-Voltage Lines and Tree-Clearance Zones

f

4.10.3. Existing Overhead Lines Adjacent to Developments

Most new developments are designed to ensure that power lines are built underground. However, one or more sides of the construction area may be bordered by existing power lines. When planning landscape improvements, applicants must use only lower-growing, fire-resistant plant species under and near overhead electric lines.

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Section 4, Electric Service: Overhead

4.10.4. Line Extensions

Line extensions must be constructed with a 15-foot clearance on either side of high-voltage power poles. This includes removing any overhanging branches. Applicants must clear the area from one end of the line extension to the final connection point before construction on the line extension begins.

Figure 4-42 on Page 4-30 illustrates an approved method for clearing affected areas. Also, any hazard trees identified during the PG&E inspection that are located outside of the 15-foot clearance zone on either side of the power poles should be removed before construction begins on the line extension. PG&E will not connect new lines to the existing distribution system until the applicant provides adequate clearance from the trees.

4.10.5. Primary Overhead Distribution Poles in Commercial Orchard Installations

Applicants must not plant trees under or adjacent to primary overhead distribution lines. When discovering any new tree plantings, PG&E reserves the right to remove those trees in order to protect its facilities.

Applicants must work with the PG&E project coordinator to choose a route for the overhead distribution facilities that does not conflict with the orchard trees and eliminates the need for future vegetation pruning.

When planting near overhead electrical service drops, applicants must consider both safety and access to the electric facilities when irrigation pumps and other electrical loads require repair.

4.10.6. Removing Vegetation Near Existing, High-Voltage, Energized Lines

C AUTION

Because safety is the Company’s highest priority, the California Occupational Safety and Health Administration (Cal/OSHA) requires that all vehicles, equipment, tools, and people maintain a minimum 10-foot distance from all high-voltage power lines. Refer to Section 1, “General,” Table 1-2, “Minimum Safe Working Distances (Scaffolds, Equipment, Tools, Structures, and People),” on Page 1-11, and Table 1-3, “Minimum Safe Working Distances (Boom-Type Lifting or Hoisting Equipment),” on Page 1-12, for the minimum safe working distances.

Applicants or unqualified tree-trimming contractors should never attempt to trim or remove trees that are within 10 feet of high-voltage power lines (i.e., conductors).

If it is necessary to trim or remove trees located within 10 feet of a high-voltage power line, applicants must notify PG&E at 1-800-743-5000 .

Generally, high-voltage power lines are any overhead lines that connect from pole to pole. These lines typically are 600 volts and greater. Post a “HIGH VOLTAGE” sign on the poles or crossarms, as shown in Figure 4-43, “High-Voltage Marker on Poles and Crossarms,” on Page 4-32.

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Section 4, Electric Service: Overhead

4.10.6. (continued)

However, applicants should contact PG&E for assistance if a line’s voltage is unknown, and should always assume that lines are high voltage .

During PG&E’s normal tree-trimming schedule, contractors qualified to perform high-voltage line clearances will prune or remove trees at no cost to applicants to create a safe distance between the vegetation and high-voltage power lines.

If it is necessary to trim a tree that is closer than 10 feet from an overhead power line before PG&E’s normal tree-trimming schedule, applicants may hire a qualified tree company to perform high-voltage line clearances (i.e., prune trees to a safe distance away from the electric lines). Again, unqualified companies/employees must never perform high-voltage line clearances . Applicants can contact PG&E to obtain the tree-trimming schedules for their areas.

ine before PG&E’s normal tree-trimming schedule, applicants may hire a qualified tree company to perform high-voltage line clearances (i.e., prune trees to a safe distance away from the electric lines). Again, unqualified companies/employees must never perform high-voltage line clearances . Applicants can contact PG&E to obtain the tree-trimming schedules for their areas.

There are regulations and statutes that dictate the requirements for working around high-voltage power lines. The California Occupational Safety and Health Administration (Cal/OSHA) requires that persons working within certain distances of overhead power lines be qualified and trained properly. For details, see the California Code of Regulations, Title 8, Division 1, Chapter 4, Subchapter 5, Group 2, “High-Voltage Electrical Safety Orders,” Article 37, Provisions for Preventing Accidents Due to Proximity to Overhead Lines,” and Article 38, “Line Clearance Tree Trimming Operations.”

In addition, the California Penal Code makes it a crime for any person to work within 6 feet of a high-voltage power line . For details and additional information about this misdemeanor, see the California Penal Code, Part 1, “Of Crimes and Punishments,” Title 10, “Of Crimes Against

” the Public Health and Safety, Section 385(b).

“HIGH VOLTAGE” Marker

“HIGH VOLTAGE” Marker

Figure 4-43 High-Voltage Marker on Poles and Crossarms

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Section 4, Electric Service: Overhead

4.10.6. (continued)

See Appendix B for PG&E’s Community Wildfire Safety Program brochure, Guide to Landscaping in High Fire-Threat Areas (on Pages B-2 and B-3). This brochure suggests the best low-growing, fire-resistant native vegetation to use when planting near power lines. In general, select plants with a reduced risk for starting and fueling wildfires.

• Low-growing native vegetation

• Plants with high-moisture and low-resin content

• Well-watered vegetation

• Plants that do not create or accumulate dry, dead material

Many people now consider non-vegetative landscaping, including the following ignition-resistant options.

• Sand

• Decorative gravel

• Tumbled glass

• Drainage rock

• Beach pebbles

• Mulch, wood chips, bark

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