Where are rules for underground, service, and utility-owned piping located?

Grounded in the retrieved California Plumbing Code — click a citation to read the verbatim passage:

• CPC § 04-15 High relevance — show source text

  2. Local ordinances may include requirements in addition to those shown in this document. Consult local inspection authorities for these requirements. In areas where local ordinances require permits and inspection, these must be obtained before PG&E can establish service. PG&E will install meter(s) after an inspection clearance has been given by the appropriate electrical inspection authority.

  3. When a service larger than 200 amps is desired, the customer shall consult with the local PG&E representative.

  4. Service Conduit and Termination

  A. PG&E will install the underground service cable and make the connections at the service termination point in

  ’ accordance with PG&E s Electric Rule 16. The underground service lateral conductors will be installed, owned, and maintained by PG&E from PG&E’s distribution system to the termination facility as indicated in Figure 2 through Figure 7 on Pages 3 through 4.

  B. The customer shall provide trenching, conduit and backfill on his property in accordance with PG&E

  ’ specifications and pay any costs required by PG&E s Electric Rule 16.

  C. Service conductors will be installed in conduit as shown in Figure 1 on Page 3. For conduit size, refer to PG&E Document 063927 for residential service or Document 063928 for commercial service.

  D. The customer shall contact the local PG&E office to discuss service arrangements and agree upon the “Electric Service Location” before trenching or wiring.

  E. The customer shall provide and install, in addition to termination facilities, all equipment needed to modify the service entrance when changing from overhead to underground service.

  F. For conduit type on or within the applicant’s building , refer to PG&E Document 063927 or Document 063928. Also consult local code authority.

  G. Install bend in direction of service trench. To facilitate cable installation, only one 90 ° bend is permitted in the riser. If a deeper trench is required, a minimum radius bend, per PG&E Document 063927 or Document 063928, shall be installed to the same depth as the trench.

  Rev. #04: 04-15-11 061032 Page 1 of 4

  UG-1: Services Greenbook Residential and Small Commercial Overhead to Underground Electric Service Conversion

  H. If the trench is used jointly with other facilities (telephone, cable TV, etc.), increased cable depth may be required. Refer to PG&E’s electrical and gas service requirements Electric and Gas Service Requirements Manual (Greenbook) Appendix B, Electric and Gas Service Documents: Joint Trench Configurations and Occupancy Guide.

• CPC § 1-1 Medium relevance — show source text

  1. Design the socket and enclosure for underground service conductors.

  2. Ensure that enclosures designed for either overhead or underground service entry meet all of the requirements for both types of service.

  3. Ensure that all cable-termination lugs are suitable to use with both aluminum and copper conductors. The lugs must be compatible with a range of conductor sizes.

  The minimum conductor size for services up to 125 amps is #6 American wire gauge (AWG) to 1/0 AWG. The minimum conductor size for services rated from 126 amps to 225 amps is #2 AWG to 250 thousand circular mils (kcmil).

  4. Use separate, independently supported, service-termination lugs that extend from the socket, and connect to it, using a bus bar. Provide a minimum radial clearance of 1-1/2 inches between the hot bus terminals and the ground or neutral surfaces. The termination facilities cannot be side- or angle-mounted in relation to the front of the panel.

  5. Ensure that the socket enclosure has a separate lug in the sealable section. Use this lug exclusively for terminating PG&E’s neutral conductor. If the neutral terminal is insulated from the enclosure, PG&E will provide the applicant with a bonding screw or jumper.

  6. Ensure that the applicant-owned wiring that extends from the distribution section (i.e., branch circuits) does not pass through the sealable section(s).

  7. Locate the applicant’s service-grounding electrode conductor outside of the sealable section and design it to permit the applicant’s grounding system to be isolated easily from PG&E’s neutral, when necessary.

  2022 – 2023 6-4

  6.4.1. (continued)

  Self-Contained Meter Socket

  Section 6, Electric Metering: Residential

  Alternative/Parallel Energy (e.g., PV) Breaker, Manufacturer Installed on Select Panels on the Line/Supply Side (Ahead) of the Main Breaker.

  Col1	Col2	Main Breaker Applicant Distribution Section (Optional) r
  N
  Underground Service Termination No Custome Cables or Equipment	Underground Service Termination No Custome Cables or Equipment	Underground Service Termination No Custome Cables or Equipment

  PG&E Service Conduit (in the Center Position)

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

  Notes in reference to Figure 6-1.

  1. These panels are allowed with or without a manufactured-installed alternative energy breaker on the line (supply) side of the main breaker.

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

  Rating in Amps	X	Y	N	W	Conduit
  Rating in Amps	Minimum Dimensions (In Inches)	Minimum Dimensions (In Inches)	Minimum Dimensions (In Inches)	Minimum Dimensions (In Inches)	Minimum Dimensions (In Inches)
  Up to 125	8	4	6	6.5	2 – 3
  126 to 225	11	5	8-1/2	6.5	3 – 4

• CPC § 9-3 Medium relevance — show source text

  Applicants must ensure that underground service-termination compartments or sections meet the following requirements.

  A. The termination compartment covers must be removable, sealable, provided with two lifting handles, and limited to a maximum size of 9 square feet.

  B. The cover panel can be sealed using two drilled stud-nut and wing-nut assemblies on opposite sides of the panel.

  C. The minimum dimensions specified in Table 9-3, “Minimum Wall-Mounted Pull-Section Dimensions: Residential and Nonresidential, Single-Phase or Three-Phase,” on Page 9-13, are used when the service conduit enters the bottom of the termination compartment or termination enclosure and all load conductors exit above the terminals. When the service conduit enters from the side or back of the pull box, use the X dimensions from the closest portion of the conduit to the nearest termination bolt.

  D. Applicants must not use wall-mounted service-termination and pull enclosures for three-phase, nonresidential installations rated 401 amps through 2,500 amps. See Table 9-4, “Minimum Pad-Mounted (Floor-Standing) Switchboard Pull-Section Dimensions: Residential and Nonresidential,

                                                Single-Phase and Three-Phase,” on Page 9-13, and Section 10, Table 10 1,
  

  “Minimum Bottom-Fed Pull Section Dimensions,” on Page 10-27, for bottom-entry installation requirements. See Table 10-2, “Pull Section Dimensions (Minimums) Below Ground Level,” on Page 10-31, for side-entry or back-entry requirements.

  E. A PG&E project coordinator is contacted when developing nonresidential, 401-amps-and-above services. Applicants must ensure that they meet PG&E’s requirements for underground service-termination pull boxes, which include the following:

  1. Installing multiple sets of utility service cables.

  2. Provide stacking provisions (i.e., bolts) to terminate cables in any three-phase installation that is 1,200 amps or greater.

  3. Providing additional space (i.e., depth, width, and termination height), when required, in any section of switchboard, panel board, or other enclosure intended as a termination point for PG&E’s service cables. This additional space will provide the mandatory clearances between phases and grounded surfaces, as well as accommodate the installed service cables.

  See Numbered Document 063928, “Methods and Requirements for Installing Non-Residential Underground Electric Services 0–600 Volts to Customer-Owned Facilities,” for the appropriate conduit and cable requirements to use when designing nonresidential service installations. This document is included in Appendix C, “Electric and Gas Engineering Documents.”

  F. See additional requirements for pad-mounted switchboards in Section 10,

• CPC § 1.5 Medium relevance — show source text

  SECONDARY)|6|12|12|12|1.5|3|1.5| |P|(ELECTRIC PRIMARY)|12|12|12|12|3|3|3| |SL|(STREETLIGHT) SEE NOTE 5 ****|6|12|12|12|1.5|3|1.5| |FE*|(FOREIGN ELECTRIC SOURCES. NON-PG&E)
  SEE NOTE 5 |12|12|12|12**|12|12|12|

  1 ” ”

  * Must be considered a “Utility” as defined in Utility Standard S5453, Joint Trench . 2 ** For exceptions, refer to G.O. 128 rule, section B. Items (1) and (2). 3 *** These clearances/separations supersede old clearances/separation shown in S5453 Exhibit B. 4 **** It is preferred to have non−PG&E owned streetlights at a level other than the gas or electric level. Non−PG&E owned streetlights may be at the electric level of the trench as long as minimum clearances are provided and comply with all special notes for a joint trench with a second electric utility.

  Rev. #15: 03-25-22 038193 Page 3 of 27

  UG-1: General Greenbook Minimum Requirements for the Design and Installation of Electric Conduit, Insulated Cable, and Facilities

  Trench Requirements (Continued)

  Notes

  3. For independently installed electric trenches, most of the requirements are the same as for joint trenches. However, Table 2 below shows and clarify requirements when installing electric trench only.

  Table 2 Minimum Seperation an Clearance for Electrical Conduit by Facility Type [5]

  Facility	Minimum Parallel Separation	Minimum Crossing Separation
  Between multiple electric primary conduits	3 inches	6 inches
  Between electric primary and secondary, service and streetlight conduits	3 Inches	6 inches
  Between electric secondary, service and streetlight conduits	1.5 inches	6 inches
  Between electric primary and gas distribution main and service conduits	12 inches	12 inches
  Between electric secondary, service, streetlight and gas main and gas service conduits	12inches	6 inches
  Leach field and electric primary, secondary, service and streetlight conduits	10 feet1	Not Allowed2
  Steam lines from PG&E electric conduits	10 feet3	18 inches3
  Tree trunk from PG&E electric primary, secondary, service, and streetlight conduits	5 feet4	5 feet4
  Diesel or other volatile liquids; propane or other volatile, heavier-than-air gases and any type of electrical conduit	20 feet	20 feet
  Edge of Underground gas tank and any type of electric conduits	10 feet	10 feet
  Hydrogen cooling block, dispenser or storage and any type of electric conduit	5 feet	5 feet
  Hydrogen compressor and any type of electric conduit	15 feet	15 feet
  Any other pipe systems or other foreign substructures excluding wet facilities not listed above	12 inches	6 inches

• CPC § 1-350 Medium relevance — show source text

  This document shows the methods and requirements for installing PG&E-owned underground service conductors in commercial buildings and three-phase multi-residential buildings. For agricultural underground service refer to Document 054619 where i_chronicle_id ='09131aad80dfe6e1' and any r_version_label='LIVE')

  General Information

  1. See Document 058817 for terminating underground electric service 0−600 V in customer owned facilities.

  2. Single-phase main service switches must not exceed 200 amps for 120/208 V services or 600 amps for 120/240 V services. All single-phase, 120/208 V services require full-sized neutrals.
  3. Ensure that any new installed secondary-distribution cable is not smaller, either in size or in number of runs, than the largest new service that is on the load side of that new secondary system. For example, if the largest service required will be 1-350 Al, then the secondary must be a minimum of 1-350 Al. The existing secondary distribution system can remain as is if it can adequately support any new services without causing loading, voltage drop, and voltage flicker issues.

  Customer Requirements

  4. The applicant must provide trench and backfill in accordance with Electric Rule 16 and PG&E requirements. PG&E will furnish and install the service cables and make the connection at the point of service delivery in the applicant’s service termination enclosure. Qualification of material for use as backfill is the responsibility of the job foreman or, in the case of contract work, the inspector or their designer. A visual inspection of the material is sufficient for evaluation of the material. The source of the backfill, native or import, is immaterial to the suitability of the backfill for the use in the trench. In new construction areas, the developer may be required to have a soil report available, which will assist in determining if import backfill is necessary. Soil compaction must 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 properties and in all other areas must have soil compacted to a minimum of 90% density.

  C. A compaction test report may be required by PG&E. This report must include the testing company information: Name, Address, Contact Information.

  Rev. #26: 03−25−22 063928 Page 1 of 9

  UG-1: Services Greenbook EDM

  Methods and Requirements for Installing Non-Residential Underground Electric Services 0 − 600 Volts to Customer-Owned Facilities

  5. Service conduits installed through or under the applicant’s building foundation/slab must not exceed 20’ past the outside wall of the building and must terminate into the electrical room. See Figure 4 on Page 8. The installation requirements and conduit types for PG&E service conductors used in this application must be as indicated below;

  A. Conduits must not pass under or through one building to supply adjacent buildings.

  B. UL651 approved PVC Schedule 40 or 80.

• CPC § 2.5. Medium relevance — show source text

  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

  Table of Contents

  Contents Page

  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

• CPC § 3-2 Medium relevance — show source text

  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.

  3-5 2022 – 2023

  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.

• CPC § 1-2 Medium relevance — show source text

  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 .

• CPC § 1-350 Medium relevance — show source text

  2. Revised Note 6 on Page 1 to add limit to single-phase service for 120/200V.

  3. Modified Note 7A on Page 1.

  4. Added compaction requirements to Note 10 on Page 2.

  5. Modified Note 11 on Page 2.

  6. Moved section of what used to be part of Note 12 to new Note 13 on Page 2.

  7. Added new Note 15 on Page 2.

  8. Re−structured Note 16 on Page 2.

  9. Added Note 18C on Page 3.

  10. Added new Figure 1 on Page 3.

  11. Added new Table 1 on Page 3.

  12. Added new Notes 20 and 21 on Page 4.

  13. Added Note 22A1 on Page 4.

  14. Added Note 1A under Service Installation on Page 5.

  15. Modified Figures 2, 3, and added Figure 4 on Page 6.

  16. Moved Reference sections to the end of the document before Revision notes on Page 7.

  17. Added document 038193 to Reference Section on Page 7.

  Rev. #24: 03−25−22 063927 Page 7 of 7

  UG-1: Services Greenbook EDM

  Prepared by: MZGD

  This document is also included in the following manuals:

  • Electric and Gas Service Requirements (Greenbook)

  • Electric Design Manual

  Purpose and Scope

  This document shows the methods and requirements for installing PG&E-owned underground service conductors in commercial buildings and three-phase multi-residential buildings. For agricultural underground service refer to Document 054619 where i_chronicle_id ='09131aad80dfe6e1' and any r_version_label='LIVE')

  General Information

  1. See Document 058817 for terminating underground electric service 0−600 V in customer owned facilities.

  2. Single-phase main service switches must not exceed 200 amps for 120/208 V services or 600 amps for 120/240 V services. All single-phase, 120/208 V services require full-sized neutrals.
  3. Ensure that any new installed secondary-distribution cable is not smaller, either in size or in number of runs, than the largest new service that is on the load side of that new secondary system. For example, if the largest service required will be 1-350 Al, then the secondary must be a minimum of 1-350 Al. The existing secondary distribution system can remain as is if it can adequately support any new services without causing loading, voltage drop, and voltage flicker issues.

  Customer Requirements

  4. The applicant must provide trench and backfill in accordance with Electric Rule 16 and PG&E requirements. PG&E will furnish and install the service cables and make the connection at the point of service delivery in the applicant’s service termination enclosure. Qualification of material for use as backfill is the responsibility of the job foreman or, in the case of contract work, the inspector or their designer.
• CPC § 2-28 Medium relevance — show source text

  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.

  2-51 2022 – 2023

  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.

  Downstream From PG&E’s Meter and Service Delivery Poi Use Isolation Fitting Coated Steel Riser 6” Sleeve Through Pavement (See Note 2)	Col2	Col3	Col4	Col5	Col6	Col7	Col8
  Downstream From PG&E’s Meter and Service Delivery Poi Coated Steel Riser Use Isolation Fitting Sleeve Through Pavement (See Note 2) 6”	Downstream From PG&E’s Meter and Service Delivery Poi Coated Steel Riser Use Isolation Fitting Sleeve Through Pavement (See Note 2) 6”	Downstream From PG&E’s Meter and Service Delivery Poi Coated Steel Riser Use Isolation Fitting Sleeve Through Pavement (See Note 2) 6”
  Downstream From PG&E’s Meter and Service Delivery Poi Coated Steel Riser Use Isolation Fitting Sleeve Through Pavement (See Note 2) 6”
  Thermite Weld or Pipe Clamp (Grounding Clamp) Plastic Yard (Applicant Transition F 1-Pound Zinc Anode Fabricated Riser (Approximate 6” Radius) Minimum Cover Requi 24” 36” Well-Compacted Soil				Thermite Weld or Pipe Clamp (Grounding Clamp) Minimum Cover

• CPC § 6-3 Medium relevance — show source text

  See Numbered Document 052521, “Electrical Service Requirements for Mobile Home Developments,” for more information and for specifications. This PG&E document is included in Appendix C, “Electric and Gas Engineering Documents,” and also in PG&E’s Electric Underground Construction Manual, Book 1.

  6-3 2022 – 2023

  Section 6, Electric Metering: Residential

  6.4. Services

  6.4.1. Single Meter: Underground Service

  A. Services, 0 Amps Through 225 Amps, Single Phase

  Figure 6-1, “Typical Underground Service-Termination Enclosure, Combination Meter-Socket Panel (Residential, 0 Amps−225 Amps),” on Page 6-5, illustrates a single, underground, residential, single-phase meter panel (i.e., 4 terminal for a 120/240-volt service and 5 terminal for a 120/208-volt service).

  The numbered items below describe the applicant’s requirements when designing these types of underground services.

  1. Design the socket and enclosure for underground service conductors.

  2. Ensure that enclosures designed for either overhead or underground service entry meet all of the requirements for both types of service.

  3. Ensure that all cable-termination lugs are suitable to use with both aluminum and copper conductors. The lugs must be compatible with a range of conductor sizes.

  The minimum conductor size for services up to 125 amps is #6 American wire gauge (AWG) to 1/0 AWG. The minimum conductor size for services rated from 126 amps to 225 amps is #2 AWG to 250 thousand circular mils (kcmil).

  4. Use separate, independently supported, service-termination lugs that extend from the socket, and connect to it, using a bus bar. Provide a minimum radial clearance of 1-1/2 inches between the hot bus terminals and the ground or neutral surfaces. The termination facilities cannot be side- or angle-mounted in relation to the front of the panel.

  5. Ensure that the socket enclosure has a separate lug in the sealable section. Use this lug exclusively for terminating PG&E’s neutral conductor. If the neutral terminal is insulated from the enclosure, PG&E will provide the applicant with a bonding screw or jumper.

  6. Ensure that the applicant-owned wiring that extends from the distribution section (i.e., branch circuits) does not pass through the sealable section(s).

  7. Locate the applicant’s service-grounding electrode conductor outside of the sealable section and design it to permit the applicant’s grounding system to be isolated easily from PG&E’s neutral, when necessary.

  2022 – 2023 6-4

  6.4.1. (continued)

• California Plumbing Code Medium relevance — show source text

  076249 Page 2 of 7 Rev. #01: 03−25−22

  Greenbook

  Virtual Net Energy Metering Installations

  Point on Connection: Underground Service Wall-Mounted Equipment

  Alternate Conduit

  Fused Safety Switch

  To Generating System

  Col1	Col2
  TBF	TBF

  Figure 1 Interconnection in Main Disconnect Section

  Interconnection Area Must Have AHJ Approval

  Customer Owned Wires

  To Generating

  Test-Bypass Facilities Sealable Termination Enclosure and Utility Service

  Col1	Col2

  Figure 2 Interconnection with New Service Termination Enclosure

  Alternate Conduit

  Fused Safety Switch

  Rev. #01: 03−25−22 076249 Page 3 of 7

  Greenbook Virtual Net Energy Metering Installations

  Point on Connection: Overhead Service Wall-Mounted Equipment

  Interconnection Area Must Have AHJ Approval

  Utility Service

  Alternate

  Col1	Col2	Col3	Col4	Col5	Col6	Main Service Disconnect

  Fused Safety Switch

  To Generating System

  Test-Bypass Facilities

  Figure 3 Interconnection for Overhead Service Equipment

  Fused Safety Switch

  To Generating System

  Col1	Col2
  TBF	TBF

  Test-Bypass Facilities

  Figure 4 Interconnection with New Sealable Raceway/Bussed Gutter

  076249 Page 4 of 7 Rev. #01: 03−25−22

  Greenbook

  Virtual Net Energy Metering Installations

  Point on Connection: Floor Standing Switchboards

  Metering CT Section

  Utility Service Termination Section

  Col1	Col2	Col3	Main Service Disconnect

  Customer Owned Conductors to CT Section

  Clear Separation Between Utility and Customer Conductors

  Utility Service Conductors

  Figure 5 Unallowable for NEMV Interconnection

  Col1	Col2	Col3	Col4	Col5	Col6
  rs ice s

  Figure 6 Pull Section and Clear Separation

  Rev. #01: 03−25−22 076249 Page 5 of 7

  Greenbook Virtual Net Energy Metering Installations

  Point on Connection:

  Customer Conductors Not Allowed and No Clear Separation NEMV Interconnection Not Possible

  Utility Service

• CPC § 403.6 Medium relevance — show source text

  E 403.6 Protection Coatings for Metal Gas Piping. All buried or submerged metallic gas piping shall be protected from corrosion by approved coatings or wrapping materials. All gas pipe protective coatings shall be approved types, shall be machine applied, and shall conform to recognized standards. Field wrapping shall provide equivalent protection and is restricted to those short sections and fittings that are necessarily stripped for threading or welding. Risers shall be coated or wrapped to a point at least 6 inches (152 mm) above ground. [NFPA 501A:4.3.6.2.1 – 4.3.6.2.4]

  E 403.7 Plastic Piping. Plastic piping shall only be used underground and shall meet the requirements of ASTM D2513 or ASTM D2517, as well as the design pressure and design limitations of 49 CFR 192.123, and shall otherwise conform to the installation requirements thereof. {NFPA 501A:4.3.6.3} E 403.8 Gas Piping Installation. All gas piping installed below ground level shall have a minimum earth cover of 18 inches (457 mm) and shall be installed with at least 12 inches (305 mm) of clearance in any direction from any other underground utility system. [NFPA 501A:4.3.7.1] E 403.8.1 Metallic Gas Piping. All metallic gas piping systems shall be installed in accordance with approved plans and specifications, including provisions for cathodic protection. Each cathodic protection system shall be designed and installed to conform to the provisions of 49 CFR 192. [NFPA 501A:4.3.7.2.1, 4.3.7.2.2]

  E 403.8.2 Cathodic Protection. Where the cathodic protection system is designed to protect only the gas piping system, the gas piping system shall be electrically isolated from all other underground metallic systems or installations. Where only the gas piping system is cathodically protected against corrosion, a dielectric fitting shall be used in the manufactured home gas connection to insulate the manufactured home from the underground gas piping system. [NFPA 501A:4.3.7.2.3, 4.3.7.2.4] E 403.8.3 Underground Metallic Systems. Where a cathodic protection system is designed to provide all underground metallic systems and installations with pro

  TABLE E 403.2

  DEMAND FACTORS FOR USE IN CALCULATING GAS PIPING

  SYSTEMS IN MANUFACTURED HOME COMMUNITIES

  [NFPA 501A: TABLE 4.3.4.1]

  For SI units: 1000 British thermal units per hour = 0.293 kW

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  APPENDIX E

  tection against corrosion, all such systems and installations shall be electrically bonded together and protected as a whole. [NFPA 501A:4.3.7.2.5] E 403.8.4 Plastic Gas Piping. Plastic gas piping shall be used only underground and shall be installed with an electrically conductive wire for locating the pipe. The wire used to locate the plastic pipe shall be copper, not smaller in size than 18 AWG, with insulation approved for direct burial.

• CPC § 93.3 Medium relevance — show source text

  
  and Services1|A-93.3|Excess Flow Valves| |J: Meters, Gauges
  and Instruments1|J-12.4|Mobile Home/Manufactured Home Meter Set Installation| |J: Meters, Gauges
  and Instruments1|J-15|Gas Meter Locations| |J: Meters, Gauges
  and Instruments1|J-16|Gas Meter Room| |J: Meters, Gauges
  and Instruments1|J-65.1|Volume Pulse Output Connection for Gas Meters| |J: Meters, Gauges
  and Instruments1|J-95|Meter Guard Design and Installation Arrangement| |K: Pits, Vaults,
  Boxes, and
  Shelters1|K-51|Single Meter Cabinet for Domestic Gas Meters| |L: Marker Tags,
  Signs, Barricades,
  and Fences|L-16|Gas Pipeline Underground Warning Tape| |Greenbook 2|N-01|PG&E Approved Gas Materials Manufacturers|

  1 For PG&E reference only: “Section” refers to the section in PG&E TD-4950M, Gas Design Standards Manual, which contain these documents.

  2 This document is not in TD-4950M, Gas Design Standards Manual.

  C−1 2022 – 2023

  Appendix C: Electric and Gas Engineering Documents

  Table C-2 Electric Engineering Documents

  Section 1	Document Number	Title
  Underground1 “Connectors”	013109	Corrosion Resistant Ground Rods and Ground Rod Clamps
  Underground1 “Connectors”	015251	Connectors for Insulated Cables Underground Distribution Systems
  Overhead1 “Services”	025055	Requirements for Customer-Owned Poles
  Overhead1 3 “Services”	027911	Installation Details for Service to Pole-Mounted Communication Equipment
  Underground1 “Enclosures”	028028	Secondary Electric Underground Enclosures
  Underground1 “Services”	036670	Temporary Underground Electric Service Single-Phase, 120/240 Volt, 200 Amps Maximum
  Underground1 “Cable”	038193	Minimum Requirements for the Design and Installation of Electric Conduit, Insulated Cable, and Facilities
  Underground1 “Transformers”	041352	Service Entrance From Underground Vault Using Bus Bars
  Underground1 “Transformers”	045292	Concrete Pad for Three-Phase, Loop-Style, Pad-Mounted Transformers
  Underground1 “General”	051122	Clearances and Location Requirements for Enclosures, Pads, and Underground Equipment
  Greenbook 2	052521	Electrical Service Requirements for Mobile Home Developments
  Underground1 “Services”	054619	Agricultural Underground Service 500 HP or Less
  Underground1 “Services”	054712	Permanent Wood Post Installation Underground Electric Service
  Engineering Standards2	055103	Planning Guide for Single Customer Substations Served From Transmission

• CPC § 4.6 Medium relevance — show source text

  Considerations are soil density; clearance from obstacles, utilities, and structures; location of bends, and water service locations. Excavations and shoring shall be in accordance with jurisdictional safety requirements. (c) Set Up Fuse the proper length of polyethylene pipe in accordance with ASTM F2620, or ASTM D3261 and fuse the end to a small length that is attached to the pulling head. A rod pusher cable is pushed through the damaged host pipe and attached to the pulling cable, which is then drawn through the pipe. The clevis end of the cable is attached to the pulling head. The pulling equipment is then set up according to the manufacturer’s instructions.

  (d) Pulling Pull the pulling head through. Once the pull is done, complete the connection to the existing piping.

  4.6 Cleanouts

  4.6.1 Plug Each cleanout fitting for cast-iron pipe shall consist of a cast-iron or brass body and an approved plug. Each cleanout for galvanized wrought-iron, galvanized steel, copper, or brass pipe shall consist of a brass plug as specified in Table 1, or a standard weight brass cap, or an approved ABS or PVC plastic plug, or an approved stainless-steel cleanout or plug. Plugs shall have raised square heads or approved countersunk rectangular slots. 4.6.2 Approved Each cleanout fitting and each cleanout plug, or cap shall be of an approved type.

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  4.6.3 Watertight and Gastight

  Cleanouts shall be designed to be watertight and gastight.

  5 Testing and Inspection Requirements

  5.1 Media

  The piping of the building sewer shall be tested with water. The Authority Having Jurisdiction shall be permitted to require the removal of cleanouts, etc., to ascertain whether the pressure has reached all parts of the system.

  5.2 Water Test

  The system shall be tested by plugging the end of the building sewer at its points of connection to the public sewer or private sewage disposal system and completely filling the building sewer with water from the lowest to the highest point thereof.

  5.3 Inspections

  The completed piping shall be internally inspected by camera unless waived by the Administrative Authority.

  TABLE 1

  CLEANOUTS (See Section 4.6.1)

  NPS	SIZE OF CLEANOUT (inches)	THREADS PER INCH
  1.5	1.5	11.5
  2	1.5	11.5
  2.5	2.5	8
  3	2.5	8
  4 & larger	3.5	8

  Note: For SI units: 1 inch = 25 mm

  Uniform Plumbing Code References

  The following sections of the 2024 Uniform Plumbing Code apply.

  105.2 Required Inspections

  105.2.2 Other Inspections

  105.3 Testing of Systems

  301.2 Minimum Standards

  309.0 Workmanship

  312.0 Protection of Piping, Materials, and Structures

• CPC § 12.4 Medium relevance — show source text

  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.

  2-51 2022 – 2023

  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.

• CPC § 312.0 Medium relevance — show source text

  Note: Accessory dwelling units are not required to have inde- pendent service utility (drainage) connections provided they meet the specific requirements in Government Code Section 65852.2.

  312.0 Protection of Piping, Tubing, Materials, and Structures.

  312.1 General. Piping passing under or through walls shall be protected from breakage. Piping passing through or under cinders or other corrosive materials shall be protected from external corrosion in an approved manner. Approved provisions shall be made for expansion of hot water piping. Voids around piping passing through concrete floors on the ground shall be sealed.

  312.2 Installation. Piping in connection with a plumbing system shall be so installed that piping or connections will not be subject to undue strains or stresses, and provisions shall be made for expansion, contraction, and structural settlement. No plumbing piping shall be directly embedded in concrete or masonry. No structural member shall be seriously weakened or impaired by cutting, notching, or otherwise, as defined in the California Building Code or California Residential Code . 312.3 Building Sewer and Drainage Piping. No building sewer or other drainage piping or part thereof, constructed of materials other than those approved for use under or within a building, shall be installed under or within 2 feet (610 mm) of a building or structure, or less than 1 foot (305 mm) below the surface of the ground. 312.4 Corrosion, Erosion, and Mechanical Damage. Piping subject to corrosion, erosion, or mechanical damage shall be protected in an approved manner. 312.5 Protectively Coated Pipe. Protectively coated pipe or tubing shall be inspected and tested, and a visible void, damage, or imperfection to the pipe coating shall be repaired in an approved manner. 312.6 Freezing Protection. No water, soil, or waste pipe shall be installed or permitted outside of a building, in attics or crawl spaces, or in an exterior wall unless, where necessary, adequate provision is made to protect such pipe from freezing. 312.7 Fire-Resistant Construction. Piping penetrations of fire-resistance-rated walls, partitions, floors, floor/ceiling assemblies, roof/ceiling assemblies, or shaft enclosures shall be protected in accordance with the requirements of the Cal- ifornia Building Code or California Residential Code . 312.8 Waterproofing of Openings. Joints at the roof around pipes, ducts, or other appurtenances shall be made watertight by the use of lead, copper, galvanized iron, or other approved flashings or flashing material. Exterior wall openings shall be made watertight. Counterflashing shall not restrict the required internal cross-sectional area of the vent. 312.9 Steel Nail Plates. Plastic piping or tubing, and copper or copper alloy piping or tubing penetrating framing members to within 1 inch (25.4 mm) of the exposed framing shall be protected by steel nail plates not less than No. 18 gauge (0.0478 inches) (1.2 mm) in thickness. The steel nail plate shall extend along the framing member not less than 1 [1] ⁄ 2 inches (38 mm) beyond the outside diameter of the pipe or tubing. Fuel gas piping shall be protected in accordance with Section 1210.4.3.

• CPC § 1.1.1.1 Medium relevance — show source text

  [NFPA 54:1.1.1.1(A)]

  1302.2 Piping System Requirements. Requirements for piping systems shall include design, materials, components, fabrication, assembly, installation, testing, inspection, operation, and maintenance. [NFPA 54:1.1.1.1(E)]

  1302.3 Applications. This chapter shall not apply to the following items:

  (1) Portable LP-Gas appliances and equipment of all types that are not connected to a fixed fuel piping system.

  (2) Installation of appliances such as brooders, dehydrators, dryers, and irrigation equipment used for agricultural

  purposes.

  (3) Raw material (feedstock) applications except for piping to special atmosphere generators.

  (4) Oxygen-fuel gas cutting and welding systems.

  (5) Industrial gas applications using such gases as acetylene and acetylenic compounds, hydrogen, ammonia, carbon monoxide, oxygen, and nitrogen.

  (6) Petroleum refineries, pipeline compressor or pumping stations, loading terminals, compounding plants, refinery tank farms, and natural gas processing plants.

  (7) Large integrated chemical plants or portions of such plants where flammable or combustible liquids or gases are produced by chemical reactions or used in chemical reactions.

  (8) LP-Gas installations at utility gas plants.

  (9) Liquefied natural gas (LNG) installations.

  (10)Fuel gas piping in electric utility power plants.

  (11)Proprietary items of equipment, apparatus, or instruments such as gas-generating sets, compressors, and calorime ters.

  (12)LP-Gas equipment for vaporization, gas mixing, and gas manufacturing.

  (13)LP-Gas piping for buildings under construction or renovations that is not to become part of the permanent building piping system—that is, temporary fixed piping for building heat.

  (14)Installation of LP-Gas systems for railroad switch heating.

  (15)Installation of LP-Gas and compressed natural gas (CNG) systems on vehicles.

  (16)Gas piping, meters, gas pressure regulators, and other appurtenances used by the serving gas supplier in distribution of gas, other than undiluted LP-Gas.

  (17)Building design and construction, except as specified herein.

  (18)Fuel gas systems on recreational vehicles manufactured in accordance with NFPA 1192.

  (19)Fuel gas systems using hydrogen as a fuel.

  (20)Construction of appliances. {NFPA 54:1.1.1.2}

  1303.0 Inspection. 1303.1 Inspection Notification. Upon completion of the installation, alteration, or repair of gas piping, and prior to the use thereof, the Authority Having Jurisdiction shall be notified that such gas piping is ready for inspection. 1303.2 Excavation. Excavations required for the installation of underground piping shall be kept open until such time as the piping has been inspected and approved. Where such piping is covered or concealed before such approval, it shall be exposed upon the direction of the Authority Having Jurisdiction.

  1303.3 Type of Inspections. The Authority Having Jurisdiction shall make the following inspections and either shall approve that portion of the work as completed or shall notify the permit holder wherein the same fails to be in accordance with this code.

  1303.3.1 Rough Piping Inspection. This inspection shall be made after gas piping authorized by the permit has been installed before such piping has been covered or concealed, or before fixture or appliance has been attached thereto.

• CPC § 302.7.1 Medium relevance — show source text

  E 302.7.1 Approval. Regenerating water-conditioning equipment shall be listed and labeled by an approved listing agency.

  E 302.7.2 Installation. Regenerating units shall discharge the effluent of regeneration into a trap not less than 1 [1] ⁄ 2 inches (40 mm) in diameter connected to the manufactured home park drainage system. An approved air gap shall be installed on the discharge line a minimum of 12 inches (305 mm) above the ground.

  E 302.8 Testing. Installations shall be tested and inspected in accordance with Chapter 3 of this code.

  E 401.0 Fuel Supply.

  E 401.1 Fuel Gas Piping Systems. All fuel gas piping systems serving manufactured homes, accessory buildings, or structures and communities shall be designed and constructed in accordance with any applicable provisions of NFPA 54 and NFPA 58. NFPA 31 shall apply to oil fuel-burning systems and shall conform to the criteria of the Authority Having Jurisdiction. [NFPA 501A:4.1.1.1 – 4.1.1.2]

  E 401.2 Gas Supply Connections. Gas supply connections at sites, where provided from an underground gas supply piping system, shall be located and arranged to permit attachment to a manufactured home occupying the site.

  For the installation of liquefied petroleum gas (LP-Gas) storage systems, the provisions of NFPA 58 shall be followed. [NFPA 501A:4.1.2.1 – 4.1.2.2]

  E 401.3 Location of Gas Supply Connection. The gas supply to the manufactured home shall be located within 4 feet (1219 mm) of the manufactured home stand.

  Exception: The requirement of Section E 401.3 shall not apply to gas supply connections for manufactured homes located on all-weather wood, concrete, or concrete block foundation systems or on foundations constructed in accordance with the local building code or, in the absence of a local code, with a recognized model building code. [NFPA 501A:4.1.3]

  E 401.4 Recreational Vehicle Park Fuel Gas Equip- ment and Installations. Fuel gas equipment and installations shall comply with this appendix, except as otherwise permitted or required by this code.

  E 402.0 Single and Multiple Manufactured Home Site Fuel Supply Systems.

  E 402.1 Underground Installations. Underground gas piping system installations shall comply with any applicable building code, Section E 402.2 and Section E 402.2.1. [NFPA 501A:4.2.1]

  E 402.2 Open-Ended Gastight Conduit. Underground gas piping shall not be installed beneath that portion of a manufactured home site reserved for the location of a manufactured home or manufactured home accessory building or structure unless installed in the open-ended gastight conduit of Section E 402.2.1. [NFPA 501A:4.2.1.1]

  E 402.2.1 Requirements. The open-ended gastight conduit shall conform to the requirements in the following:

  (1) The conduit shall be not less than Schedule 40 pipe that is approved for underground installation beneath buildings.

  (2) The interior diameter of the conduit shall be not less than [1] ⁄ 2 of an inch (15 mm) larger than the outside diameter of the gas piping.

• CPC § 309.0 Medium relevance — show source text

  2025 CALIFORNIA PLUMBING CODE 469

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  IS 33

  Uniform Plumbing Code References for Ductile Iron and PVC Pressure Building Supply and Exterior Cold-Water Piping

  The following sections of the 2024 Uniform Plumbing Code apply to ductile iron and PVC pressure building supply and exterior cold-water piping.

  Chapter 3 General Regulations

  309.0 Workmanship

  312.0 Protection of Piping, Materials, and Struc tures

  313.0 Hangers, Supports, and Anchors

  314.0 Trenching, Excavation, and Backfill

  Chapter 6 Water Supply and Distribution

  604.0 Materials (water piping)

  Table 604.1 Materials for Building Supply and Water Distribution Piping and Fittings

  605.4 Ductile Iron Pipe and Joints

  605.12 PVC Plastic Pipe and Joints

  605.16.2 Plastic Pipe to Other Materials

  609.0 Installation, Testing, Unions, and Location

  Abbreviations

  IAPMO International Association of Plumbing and Mechanical Officials

  UPC Uniform Plumbing Code published by IAPMO

  AWWA American Water Works Association

  CSA Canadian Standards Association

  Applicable Standards.

  ASME B16.4 Gray Iron Threaded Fittings Classes 125 and 250

  ASTM D1785 Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

  ASTM D2241 Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)

  ASTM D2466 Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40

  ASTM D2467 Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80

  ASTM F1970 Special Engineered Fittings, Appurtenances or Valves for use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Systems

  AWWA C110 Ductile Iron and Gray-Iron Fittings

  AWWA C111 Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings

  AWWA C151 Ductile-Iron Pipe, Centrifugally Cast

  AWWA C153 Ductile-Iron Compact Fitting

  AWWA C900 Polyvinyl Chloride (PVC) Pressure Pipe and Fabricated Fittings, 4 in. through 12 in. (100 mm through 300 mm)

  AWWA C904 Crosslinked Polyethylene (PEX) Pressure Tubing, ½ in. through 3 In. (13 mm through 76 mm), for Water Service

  AWWA C907 Injection-Molded Polyvinyl Chloride (PVC) Pressure Fittings, 4 In, through 12 in (100 mm through 300 mm) for Water, Wastewater and Reclaimed Water Service

  IAPMO/

  ANSI UPC-1 Uniform Plumbing Code

  470 2025 CALIFORNIA PLUMBING CODE

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• CPC § 2025 Medium relevance — show source text

  NFPA standards can be accessed at www.nfpa.org. In addition, this extracted material may include revisions or modifications developed through IAPMO’s standards development process. Therefore, NFPA disclaims responsibility for the content of this Code.

  Text that is extracted pursuant to IAPMO’s Extract Guidelines, but outside of the regular revision process is denoted with the use of the source document in the margin. This text is not fully processed by IAPMO in accordance with ANSI’s public announcement consensus requirements for an American National Standard (ANS) nor approved by ANSI’s Board of Standards Review. The next revision cycle processes such text in accordance with those requirements.

  2025 CALIFORNIA PLUMBING CODE ix

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  Important Notices and Disclaimers The 2024 edition of the Uniform Plumbing Code is developed through a consensus standards development process approved by the American National Standards Institute. This process brings together volunteers representing varied viewpoints and interests to achieve consensus on plumbing issues. While the International Association of Plumbing and Mechanical Officials (IAPMO) administers the process and establishes rules to promote fairness in the development of consensus, it does not independently test, evaluate, or verify the accuracy of any information or the soundness of any judgments contained in its codes

  and standards.

  IAPMO disclaims liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential, or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this document. IAPMO also makes no guarantee or warranty as to the accuracy or completeness of any information published

  herein.

  In issuing and making this document available, IAPMO is not undertaking to render professional or other services for or on behalf of any person or entity. Nor is IAPMO undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independent judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances.

  Updating IAPMO Codes Users of IAPMO codes should be aware that IAPMO codes may be amended from time to time through the issuance of Tentative Interim Amendments or corrected by Errata. IAPMO codes consist of the current edition of the document together with any Tentative Interim Amendment and any Errata in effect.

  To access information for a specific code or to determine whether an IAPMO code has been amended through the issuance of Tentative Interim Amendments or corrected by Errata, please visit the IAPMO codes information page on the IAPMO’s website (https://www.iapmo.org/codedevelopment). The codes information page provides a list of IAPMO codes with up-to-date, specific information including any issued Tentative Interim Amendments and Errata.

  x

  2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  FOREWORD

  Origin and Development The advantages of a statewide adopted Uniform Plumbing Code are recognized throughout the industry. Disorder in the industry because of widely divergent plumbing practices and the use of many different, often conflicting, plumbing codes by local jurisdictions influenced the Western Plumbing Officials Association (now the International Association of Plumbing and Mechanical Officials [IAPMO]) to form a committee.

• CPC § 3.2 Medium relevance — show source text

  Metal insert fittings shall comply with ASTM F1974. Crimp insert fittings shall be joined to the pipe by placing the copper crimp ring around the outer circumference of the pipe, forcing the pipe material into the space formed by the ribs on the fitting until the pipe contacts the shoulder of the fitting. The crimp ring shall then be positioned on the pipe so the edge of the crimp ring is [1] / 8 of an inch (3.2 mm) to [1] / 4 of an inch (6.4 mm) from the end of the pipe. The jaws of the crimping tool shall be centered over the crimp ring and tool perpendicular to the barb. The jaws shall be closed around the crimp ring and shall not be crimped more than once. (2) Compression joints for PE-AL-PE pipe or tubing and fittings shall be joined through the compression of a split ring, by a compression nut around the circumference of

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  HYDRONICS

  shall be a soldered, brazed, flared, or pressed joint and the connection between the threaded pipe and the fitting shall be made with a standard pipe size threaded joint.

  1211.16.2 Plastic Pipe to Other Materials. Where connecting plastic pipe to other types of plastic or other types of piping material; approved listed adapter or transition fittings and listed for the specific transition intended shall be used. Except as provided in the plumbing code, PVC pipe and fittings shall not be solvent welded to any other unlike material.

  1212.0 Valves.

  1212.1 General. Valves shall be rated for the operating temperature and pressure of the system. Valves shall be compatible with the type of heat transfer medium and piping material.

  1212.2 Where Required. Valves shall be installed in hydronic piping systems in accordance with Section 1212.3 through Section 1212.12. Valves shall be accessible.

  1212.3 Heat Exchanger. Isolation valves shall be installed on the supply and return side of the heat exchanger.

  1212.4 Pressure Vessels. Isolation valves shall be installed

  on connections to pressure vessels.

  1212.5 Pressure Reducing Valves. Isolation valves shall be installed on both sides of a pressure reducing valve.

  1212.6 Equipment, Components, and Appliances. Serviceable equipment, components, and appliances within the system shall have isolation valves installed upstream and downstream of such devices.

  1212.7 Expansion Tank. Isolation valves shall be installed at connections to non-diaphragm-type expansion tanks.

  1212.8 Flow Balancing Valves. Where flow balancing valves are installed, such valves shall be capable of increasing or decreasing the amount of flow by means of adjustment.

  1212.9 Mixing or Temperature Control Valves. Where mixing or temperature control valves are installed, such valves shall be capable of obtaining the design water temperature and design flow requirements.

  1212.10 Thermosiphoning. An approved type check valve shall be installed on liquid heat transfer piping to control thermosiphoning of heated liquids.

  1212.11 Air Removal Device or Air Vents. Isolation valves

  shall be installed where air removal devices or automatic air

• CPC § 105.5.11 Medium relevance — show source text

  Permit 105.5.11

  Requirements 5503 Underground storage tanks 5806.4.5 Cryogenic Vessel Defined 202

  Current Taps 603.5.2 Custodial Care (Occupancy Group I) [see Institutional (Group I), Day Care and Residential (Group R)] 202, 203 Cutting and Welding (see Welding and Other Hot Work) Cylinder Defined 202

  Damper Defined 202 Danger, Imminent 115.2 Day Box (Magazine, Type 3) 202 Defined 202

  Day Care (Group I-4) Table 1004.5,

  1006.2.2.4

  Dead End 1020.5, 1021.1 Decorations 807

  Exit obstruction 1032.6

  Decorative Materials 807

  Defined 202 Decorative Vegetation Artificial 807.4

  Natural 06

  Defend-In-Place 202, 1020.3 Defueling Aircraft 2006.5 Hydrogen fuel tanks 2309.6 Delayed Egress Locks 1010.2.12.1, 1032.2.1 Delivered Audio Quality (DAQ) 202 Deluge System 202, 903.4.1, 2805.2 Demolition of Buildings Fire Safety Chapter 33

  INDEX-4 2025 CALIFORNIA FIRE CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  INDEX

  Electrostatic Apparatus 2407 Electrostatic Fluidized Bed 202

  Elevator Group 202 Emergency voice/alarm communication system in 907.5.2.2 Elevator Hoistways 704.1, 1103.4 Pressurization 909.21

  Water protection 604.5.4 Elevator Keys, Fire Service (see Keys, Fire Service Elevator) Elevator Keys, Nonstandardized Fire Service Key boxes for 506.1.2 Elevator Recall/Emergency Operation 604 Emergency Alarm System 908, 5004.9, 5005.4.4

  Defined 202 Emergency Breakaway Devices 2306.7.5.1, 2307.6.3 Emergency Control Station 2703.1 Defined 202 Emergency Escape and Rescue Opening 202, 1031 Maintenance 1032.7 Emergency Evacuation Drill 405 Defined 202 Frequency 405.3, Table 405.3 Emergency Lighting Equipment Inspection and testing 1032.10 Emergency Planning and Preparedness Chapter 4 Emergency Power Systems 202, 1203 Emergency Relief Venting 2306.6.2.5, 5704.2.7.4 Emergency Repairs 105.1.4 Emergency Responder Enhancement Communications Coverage System 202, 510 Active RF-emitting device 202, 510.4.2.1, 510.4.2.4, 510.5.2.1 Existing buildings 1103.2 High-rise buildings 914.3.6 Passive RF-emitting device 202 Permits 105.6.

• CPC § 312.0 Medium relevance — show source text

  312.0 Protection of Piping, Materials, and Structures

  314.0 Trenching, Excavation, and Backfill

  701.3 Drainage Fittings

  705.5.1.1 Butt Fusion Joints

  705.5.1.2 Electro-Fusion Joints

  705.5.1.3 Socket-Fusion Joints

  723.0 Building Sewer Test

  TABLE 1

  CLEANOUTS (See Section 4.6.1)

  The following standards from Tables 1701.1 and 1701.2 of the 2024 Uniform Plumbing Code apply.

  Table 1701.1 Standards

  ASTM D2239 Polyethylene (PE) Plastic Pipe (SIDRPR) Based on Controlled Inside Diameter

  ASTM D2683 Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing

  ASTM D3261 Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing

  ASTM F714 Polyethylene (PE) Plastic Pipe (DRPR) Based on Outside Diameter

  ASTM F894 Polyethylene (PE) Large Diameter Profile Wall Sewer and Drain Pipe

  ASTM F1055 Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing

  ASTM F2620 Heat Fusion Joining of Polyethylene Pipe and Fittings

  Table 1701.2 Standards

  ASTM D2657 Heat Fusion Joining of Polyolefin Pipe and Fittings

  IAPMO PS 25 Metallic Fittings for Joining Polyethylene Pipe for Water Service and Yard Piping

  Note: For SI units: 1 inch = 25 mm

  2025 CALIFORNIA PLUMBING CODE 453

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  454 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  "The information contained in this appendix is not part of this American National Standard (ANS) and has not been processed in accordance with ANSI's requirements for an ANS. As such, this appendix may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standard."

  The following IAPMO Installation Standard is included here for the convenience of the users of the Uniform Plumbing Code. It is not considered as a part of the Uniform Plumbing Code unless formally adopted as such. This Installation Standard is an independent, stand-alone document published by the International Association of Plumbing and Mechanical Officials and is printed herein by the expressed written permission of IAPMO.

  INSTALLATION STANDARD FOR PEX TUBING SYSTEMS

  FOR HOT- AND COLD-WATER DISTRIBUTION

  IAPMO IS 31-2022

  The provisions contained in this appendix are not mandatory unless specifically adopted by a state agency, or referenced in the adopting ordinance.

  1 Scope

  1.1 General

  1.1.1 This Standard specifies requirements for the installation of SDR 9 CTS crosslinked polyethylene (PEX) tubing and fittings, including cold-expansion, crimp, press, and mechanical compression fittings, intended for hot- and cold-water distribution systems within buildings.

  1.1.2 This Standards applies to

• CPC § 705.10 Medium relevance — show source text

  Waste,
  and Vent (DWV), Sewer, Sanitary, and Storm Plumbing Sys-
  tems for Above and Below Ground Use|Joints|705.10|

  340 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  REFERENCED STANDARDS

  TABLE 1701.1 (continued) REFERENCED STANDARDS

  STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
  ASTM C1540-2020	Standard Specification for Heavy-Duty Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings	Joints	705.2.2
  ASTM C1563-2008 (R2021)	Standard Test Method for Gaskets for Use in Connection with Hub and Spigot Cast Iron Soil Pipe and Fittings for Sanitary Drain, Waste, Vent, and Storm Piping Applications	Joints	705.2.2
  ASTM C1822-2021	Standard Specification for Insulating Covers on Accessible Lavatory Piping	Miscellaneous	403.3
  ASTM D1253-2014	Standard Test Method for Residual Chlorine in Water	Miscellaneous	1506.10.6, 1603.4.1
  ASTM D1785-2021a	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120	Piping	Table 604.1, Table 701.2
  ASTM D2235-2021	Standard Specification for Solvent Cement for Acrylonitrile- Butadiene-Styrene (ABS) Plastic Pipe and Fittings	Joints	705.1.2
  ASTM D2239-2021	Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter	Piping	Table 604.1
  ASTM D2241-2020	Standard Specification for Poly (Vinyl Chloride) (PVC) Pressure- Rated Pipe (SDR Series)	Piping	Table 604.1
  ASTM D2464-2015	Standard Specification for Threaded Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80	Fittings	Table 604.1
  ASTM D2466-2021	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40	Fittings	Table 604.1
  ASTM D2467-2020	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80	Fittings	Table 604.1
  ASTM D2513-2020	Standard Specification for Polyethylene (PE) Gas Pressure Pipe, Tubing, and Fittings	Piping	1208.5.4, 1208.5.6.2, 1208.5.10.2, 1210.1.7.1(1)
  ASTM D2564-2020	Standard Specification for Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems	Joints	605.12.2, 705.6.

• CPC § 1.4 Medium relevance — show source text

  1.4, 705.3.3| |ASTM C4-2004 (R2018)|Standard Specification for Clay Drain Tile and Perforated Clay
  Drain Tile|Piping|Table 1101.4.6| |ASTM C425-2021|Standard Specification for Compression Joints for Vitrified
  Clay Pipe and Fittings|Joints|705.8.1| |ASTM C564-2020a|Standard Specification for Rubber Gaskets for Cast Iron Soil
  Pipe and Fittings|Joints|705.2.2| |ASTM C700-2018|Standard Specification for Vitrified Clay Pipe, Extra Strength,
  Standard Strength, and Perforated|Piping|Table 701.2,
  Table 1101.4.6| |ASTM C1053-2000 (R2015)|Standard Specification for Borosilicate Glass Pipe and Fittings
  for Drain, Waste, and Vent (DWV) Applications|Piping|811.2| |ASTM C1173-2018|Standard Specification for Flexible Transition Couplings for
  Underground Piping Systems|Fittings|705.10| |ASTM C1277-2020|Standard Specification for Shielded Couplings Joining Hubless
  Cast Iron Soil Pipe and Fittings|Fixtures|301.2.4, 705.2.2| |ASTM C1460-2021|Standard Specification for Shielded Transition Couplings for
  Use With Dissimilar DWV Pipe and Fittings Above Ground|Joints|705.10| |ASTM C1461-2021|Standard Specification for Mechanical Couplings Using Ther-
  moplastic Elastomeric (TPE) Gaskets for Joining Drain, Waste,
  and Vent (DWV), Sewer, Sanitary, and Storm Plumbing Sys-
  tems for Above and Below Ground Use|Joints|705.10|

  340 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  REFERENCED STANDARDS

  TABLE 1701.1 (continued) REFERENCED STANDARDS

  STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
  ASTM C1540-2020	Standard Specification for Heavy-Duty Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings	Joints	705.2.2
  ASTM C1563-2008 (R2021)	Standard Test Method for Gaskets for Use in Connection with Hub and Spigot Cast Iron Soil Pipe and Fittings for Sanitary Drain, Waste, Vent, and Storm Piping Applications	Joints	705.2.2
  ASTM C1822-2021	Standard Specification for Insulating Covers on Accessible Lavatory Piping	Miscellaneous	403.3
  ASTM D1253-2014	Standard Test Method for Residual Chlorine in Water	Miscellaneous	1506.10.6, 1603.4.1
  ASTM D1785-2021a	Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120	Piping	Table 604.1, Table 701.

• CPC § 11.0 Medium relevance — show source text

  11.0 - 1.11.11_|||X|||||||||||||||||||||| |1.13.0||||||||||||||||||||X||||| |Division II - Scope and
  Administration||||||||||||||||||||||||| |101.0||||||||||X|X|X||X|X|||||||||| |102.0||||||||||X|X|X||X|X|||||||||| |103.0||||||||||X|X|X||X|X|||||||||| |104.2 Items 1 & 2||||X|X|||||||||||||||||||| |104.3.1||||||||||X|X|X||X|X|||||||||| |104.4.3.1|X|||||||||||||||||||||||| |105.0||||||||||X|X|X||X|X||||||||||

  This state agency does not adopt sections identified with the following symbol: The Office of the State Fire Marshal’s adoption of this chapter or individual sections is applicable to structures regulated by other state agencies pursuant to Section 1.11.0.

  2 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  CHAPTER 1

  ADMINISTRATION

  DIVISION I

  CALIFORNIA ADMINISTRATION

  1.1.0 General.

  1.1.1 Title. These regulations shall be known as the Califor- nia Plumbing Code, may be cited as such and will be referred to herein as “this code.” The California Plumbing Code is Part 5 of thirteen parts of the official compilation and publi- cation of the adoption, amendment, and repeal of plumbing regulations to the California Code of Regulations, Title 24, also referred to as the California Building Standards Code. This part incorporates by adoption the 2024 Uniform Plumb- ing Code of the International Association of Plumbing and Mechanical Officials with necessary California amendments.

  1.1.2 Purpose. The purpose of this code is to establish the minimum requirements to safeguard the public health, safety and general welfare through structural strength, means of egress facilities, stability, access to persons with disabilities, sanitation, adequate lighting and ventilation, and energy con- servation; safety to life and property from fire and other haz- ards attributed to the built environment; and to provide safety to fire fighters and emergency responders during emergency operations.

  1.1.3 Scope. The provisions of this code shall apply to the construction, alteration, movement, enlargement, replace- ment, repair, equipment, use and occupancy, location, main- tenance, removal, and demolition of every building or structure or any appurtenances connected or attached to such buildings or structures throughout the State of California.

• CPC § 4.1 Medium relevance — show source text

  • 100°F
    (16°C-38°C)|1 h|6 h|2 h|12 h|6 h|24 h| |40°F-60°F
    (4°C-16°C)|2 h|12 h|4 h|24 h|12 h|48 h| |10°F- 40°F
    (-12°C+4°C)|8 h|48 h|16 h|96 h|48 h|8 days| |*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|*If gaps or loose fits are encountered in the system, double these cure times.|

  2025 CALIFORNIA PLUMBING CODE 467

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  IS 33

  FIGURE 1

  LOCATION OF THRUST BLOCKS (STANDARD AND METRIC COMBINED) A COMPARISON OF THRUST-BLOCK AREAS (See Section 4.1)

  468 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  IS 33

  FIGURE 2

  THRUST BLOCK BEARING AREA (See Section 5.2.2)

  2025 CALIFORNIA PLUMBING CODE 469

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  IS 33

  Uniform Plumbing Code References for Ductile Iron and PVC Pressure Building Supply and Exterior Cold-Water Piping

  The following sections of the 2024 Uniform Plumbing Code apply to ductile iron and PVC pressure building supply and exterior cold-water piping.

  Chapter 3 General Regulations

  309.0 Workmanship

  312.0 Protection of Piping, Materials, and Struc tures

  313.0 Hangers, Supports, and Anchors

  314.0 Trenching, Excavation, and Backfill

  Chapter 6 Water Supply and Distribution

  604.0 Materials (water piping)

  Table 604.1 Materials for Building Supply and Water Distribution Piping and Fittings

  605.4 Ductile Iron Pipe and Joints

  605.12 PVC Plastic Pipe and Joints

  605.16.2 Plastic Pipe to Other Materials

  609.0 Installation, Testing, Unions, and Location

  Abbreviations

  IAPMO International Association of Plumbing and Mechanical Officials

  UPC Uniform Plumbing Code published by IAPMO

  AWWA American Water Works Association

  CSA Canadian Standards Association

  Applicable Standards.

  ASME B16.4 Gray Iron Threaded Fittings Classes 125 and 250

  ASTM D1785 Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

  ASTM D2241 Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)

• CPC § 1323.13.3 Medium relevance — show source text

  2, 1323.13.3| |1326.4 - 1326.10|1326.5 - 1326.11| |1505.6 - 1505.14|1505.5 - 1505.13| |Figure 1505.10|Figure 1505.9| |1506.6 - 1506.13|1506.5 - 1506.12| |1603.3 - 1603.4|1603.4 - 1603.5| |Table 1603.4|Table 1603.5| |1603.5 - 1603.19|1603.6 - 1603.20| |1603.20|1503.2.4| |L 402.9 - L 402.11|L 402.8 - L 402.10| |L 404.9 - L 404.12|L 404.8 - L 404.11| |L 411.5, L 411.6|L 411.2, L411.3| |L 411.7|L 411.4| |L 411.9 - L 411.12|L 411.5 - L 411.8|

  xxii 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  RELATED PUBLICATIONS AND SERVICES

  The Documents Listed are Not by this Reference Adopted by The State of California.

  IAPMO provides a variety of other products which are useful for inspectors, building officials, architects, engineers,

  manufacturers, contractors, plumbers, and apprentices.

  IAPMO Headquarters Directory

  4755 East Philadelphia Street, Ontario, California 91761-2816

  Publication Order Desk Phone: 800-85-IAPMO

  Publication Toll Free Fax: 877-85-CODES

  E-mail: iapmo@iapmo.org

  Website: www.iapmo.org

  Free Code Question: 800-201-0335

  Uniform Plumbing Code – 2024 Edition:

  The Uniform Plumbing Code is the most widely adopted plumbing code in the world. The 2024 edition contains complete “turnkey” requirements for the installation and maintenance of plumbing systems, all in one easy to use book.

  Uniform Plumbing Code Illustrated Training Manual:

  The UPC Illustrated Training Manual is an excellent reference for anyone involved in the plumbing industry. It contains an extensive definitions section and several hundred comprehensive technical diagrams and illustrations. It serves as a textbook, and it also is useful as a valuable tool for explaining the intent and use of the Code.

  Uniform Plumbing Code Study Guide:

  This book is the perfect complement to the UPC Illustrated Training Manual. Alone, it constitutes a complete self-study course for learning the UPC. It has hundreds of questions, general practice exams, and plumbing math, pipe sizing exercises and fitting identification. A big help in getting you ready for a certification exam!

  Guide to Important Code Questions to the Uniform Plumbing Code:

  An excellent reference for learning and understanding plumbing code changes and identifies code changes between editions. It is a useful tool for preparing code change proposals.

  Uniform Mechanical Code – 2024 Edition:

  The Uniform Mechanical Code contains complete requirements for the installation and maintenance of heating, ventilating, cooking and refrigeration systems.

  Uniform Mechanical Code Illustrated Training Manual:

  Contains technical diagrams and illustrations that demonstrate the intent and use of the UMC. A great reference for everyone involved in Mechanical HVACR design and installation.

  Uniform Mechanical Code Study Guide:

• CPC § 0.06 Medium relevance — show source text

  600|17 300|11 530|8650|6920|5765|4945|4325|3845|3460|3145|2880| |6|563|54 000|27 000|17 995|13 500|10 800|9000|7715|6750|6000|5400|4910|4500| |8|1208|116 000|58 000|38 660|29 000|23 200|19 315|16 570|14 500|12 890|11 600|10 545|9600|

  For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 inch per hour = 25.4 mm/h, 1 square foot = 0.0929 m [2]

  Notes: 1 Maximum discharge capacity, gpm (L/s) with approximately 1 3 ⁄ 4 inch (44 mm) head of water at the drain. 2 For rainfall rates other than those listed, determine the allowable roof area by dividing the area given in the 1 inch per hour (25.4 mm/h) column by the desired rainfall rate. 3 Vertical piping shall be round, square, or rectangular. Square pipe shall be sized to enclose its equivalent round pipe. Rectangular pipe shall have not less than the same cross-sectional area as its equivalent round pipe, except that the ratio of its side dimensions shall not exceed 3 to 1.

  (3) For two adjacent walls of unequal height – add 35 percent of the total common height and add 50 percent of the remaining height of the highest wall. (4) Two opposite walls of same height – add no additional

  area.

  (5) Two opposite walls of differing heights – add 50 percent of the wall area above the top of the lower wall. (6) Walls on three sides – add 50 percent of the area of the inner wall below the top of the lowest wall, plus an allowance for the area of the wall above the top of the lowest wall, in accordance with Section 1103.4(3) and Section 1103.4(5) above. (7) Walls on four sides – no allowance for wall areas below the top of the lowest wall – add for areas above the top of the lowest wall in accordance with Section 1103.4(1), Section 1103.4(3), Section 1103.4(5), and Section 1103.4(6) above.

  1104.0 Values for Continuous Flow.

  1104.1 General. Where there is a continuous or semi-continuous discharge into the building storm drain or building storm sewer, as from a pump, ejector, air-conditioning plant, or similar device, 1 gpm (0.06 L/s) of such discharge shall be computed as being equivalent to 24 square feet (2.2 m [2] ) of roof area, based upon a rate of rainfall of 4 inches per hour (in/h) (102 mm/h).

  1105.0 Controlled-Flow Roof Drainage. 1105.1 Application. Instead of sizing the storm drainage system in accordance with Section 1103.0, the roof drainage shall be permitted to be sized by controlled flow and storage of the storm water on the roof, provided the following conditions are met:

  (1) The water from a 25-year frequency storm shall not be stored on the roof exceeding 24 hours.

• CPC § 31-2022 Medium relevance — show source text

  2025 CALIFORNIA PLUMBING CODE 453

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  454 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  "The information contained in this appendix is not part of this American National Standard (ANS) and has not been processed in accordance with ANSI's requirements for an ANS. As such, this appendix may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standard."

  The following IAPMO Installation Standard is included here for the convenience of the users of the Uniform Plumbing Code. It is not considered as a part of the Uniform Plumbing Code unless formally adopted as such. This Installation Standard is an independent, stand-alone document published by the International Association of Plumbing and Mechanical Officials and is printed herein by the expressed written permission of IAPMO.

  INSTALLATION STANDARD FOR PEX TUBING SYSTEMS

  FOR HOT- AND COLD-WATER DISTRIBUTION

  IAPMO IS 31-2022

  The provisions contained in this appendix are not mandatory unless specifically adopted by a state agency, or referenced in the adopting ordinance.

  1 Scope

  1.1 General

  1.1.1 This Standard specifies requirements for the installation of SDR 9 CTS crosslinked polyethylene (PEX) tubing and fittings, including cold-expansion, crimp, press, and mechanical compression fittings, intended for hot- and cold-water distribution systems within buildings.

  1.1.2 This Standards applies to

  (a) SDR 9 CTS PEX tubing complying with ASTM F876 and pressure-rated in accordance with PPI TR-3; and (b) PEX fitting systems complying with (i) ASTM F877, for mechanical compression fittings and metal or plastic insert fittings with stainless steel press sleeves; (ii) ASTM F1807 or ASTM F2159, for metal or plastic insert fittings with copper crimp rings; (iii) ASTM F1960, for cold expansion fittings with PEX reinforced rings; or (iv) ASTM F2080, for cold expansion fittings with metal compression sleeves. 1.2 Terminology

  In this Standard,

  (a) “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy to comply with the Standard; (b) “should” is used to express a recommendation, but not a requirement; (c) “may” is used to express an option or something permissible within the scope of the Standard; and (d) “can” is used to express a possibility or a capability. Notes accompanying sections of the Standard do not specify requirements or alternative requirements; their purpose is to separate explanatory or informa

  tive material from the text. Notes to tables and figures are considered part of the table or figure and can be written as requirements.

  1.3 Units of Measurement

  SI units are the primary units of record in global commerce. In this Standard, the inch/pound units are shown in parentheses. The values stated in each measurement system are equivalent in application, but each unit system is to be used independently. All references to gallons are to U.S. gallons.

  2 Reference Publications

• CPC § 26-2019 Medium relevance — show source text

  APPENDIX I

  INSTALLATION STANDARDS

  CONTENTS

  Page

  IAPMO IS 26-2019 [e4]

  Trenchless Insertion of Polyethylene (PE) Pipe for Sewer Laterals................................................................451

  IAPMO IS 31-2022

  Installation Standard for PEX Tubing Systems for Hot- and Cold Water Distribution......................................455

  IAPMO IS 33-2019 [e2]

  Thrust Blocking for Rubber Gasketed and Solvent Cement Joints ................................................................463

  TCNA Handbook-2022

  For Ceramic, Glass, and Stone Tile Installation .............................................................................................471

  2025 CALIFORNIA PLUMBING CODE 449

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  450 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  "The information contained in this appendix is not part of this American National Standard (ANS) and has not been processed in accordance with ANSI's requirements for an ANS. As such, this appendix may contain material that has not been subjected to public review or a consensus process. In addition, it does not contain requirements necessary for conformance to the standard."

  The following IAPMO Installation Standard is included here for the convenience of the users of the Uniform Plumbing Code. It is not considered as a part of the Uniform Plumbing Code unless formally adopted as such. This Installation Standard is an independent, stand-alone document published by the International Association of Plumbing and Mechanical Officials and is printed herein by the expressed written permission of IAPMO.

  TRENCHLESS INSERTION OF

  POLYETHYLENE (PE) PIPE FOR SEWER LATERALS

  IAPMO IS 26-2019 [e4]

  The provisions contained in this appendix are not mandatory unless specifically adopted by a state agency, or referenced in the adopting ordinance.

  1 Scope

  1.1 General

  This standard shall govern the trenchless installation of polyethylene (PE) pipe for use in sanitary and storm sewers. The installed pipe shall comply with the requirements of the Uniform Plumbing Code (UPC [TM] ) published by the International Association of Plumbing and Mechanical Officials (IAPMO) as to grade and connections to existing pipe and shall also comply with this standard. This standard specifies requirements for the installation of the trenchless insertion of polyethylene (PE) pipe for use in sanitary and storm sewers. 1.2 Terminology

  In this Standard,

  (a) “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy to comply with the Standard;

  (b) “should” is used to express a recommendation, but not a requirement;

  (c) “may” is used to express an option or something permissible within the scope of the Standard; and

  (d) “can” is used to express a possibility or a capability.

  Notes accompanying sections of the Standard do not specify requirements or alternative requirements; their purpose is to separate explanatory or informative material from the text. Notes to tables and figures are considered part of the table or figure and can be written as requirements.

  2 Reference Publications

  This Standard refers to the following publications, and where such reference is made, it shall be to the current edition of those publications, including all amendments published thereto.

• CPC § 1305.2.3.3 Medium relevance — show source text

  2, 1305.2.3.3, 1305.2.4.1, 1305.2.5, 1305.2.5.1, 1305.2.6, 1305.2.7.1, 1305.2.8, 1305.2.9, 1305.2.9.1, 1305.2.10, 1305.2.10.1, 1305.2.11, 1305.2.11.1, 1305.2.12.1, 1305.2.13, Table 1305.2.15, 1305.2.15.1, 1305.2.16.1, 1305.2.17, 1305.2.17.1, 1305.2.18, 1305.2.18.1, 1305.2.19, Table 1305.2.19, 1305.2.20, 1305.2.20.1, 1307.1.1, 1401.2, 1402.1, 1402.2, 1402.2.1, 1402.3, 1402.4, 1402.5, 1402.6, 1501.5, 1504.1.1, 1504.1.4.1, 1504.1.7, 1509.1, 1509.3, 1510.1

  CEC — 25 : California Energy Code

  302.2, 702.7, 708.1, 809.1, 907.1, 1104.1

  CFC—25: California Fire Code

  101.2.2, 101.4.2, 301.3.1, 302.2, 307.1, 308.1, 802.2.1, 802.2.3, 803.2.3, 803.4.1.1, 803.4.1.2, 803.4.1.3, 803.4.1.4, 803.4.1.5, 803.4.1.6, Table 804.5.1.1(1), 904.1.5, 1011.6.1.1, 1303.1.2, 1305.2.8.1, 1305.2.14, 1305.2.14.1, 1401.2, 1501.1, 1501.5, 1502.1, 1502.1.1, 1502.2, 1502.3, 1504.1, 1507.1, 1507.2

  CMC—25: California Mechanical Code

  302.2, 702.7, 807.1, 902.1.1, 1008.1, 1305.2.7.1, 1305.2.8, 1305.2.8.1

  CPC—25: California Plumbing Code

  302.2, 408.1, 702.7, 1009.1, 1009.2, 1009.3, 1009.5, 1302.1.6, 1503.1

• CPC § 37-2020 Medium relevance — show source text

  37-2020|Pressurized Flushing Devices for Plumbing Fixtures|Backflow Protection|413.2| |ASSE 1070-2020/ASME
  A112.1070-2020/CSA
  B125.70-2020|Water Temperature Limiting Devices|Valves|407.3(1), 409.4(1),
  410.3(1), 417.7(1),
  417.8| |ASME B1.20.1-2013
  (R2018)|Pipe Threads, General Purpose (Inch)|Joints|605.1.5, 605.2.3,
  605.5.2, 605.12.3,
  705.1.3, 705.3.4,
  705.4.2, 705.6.3,
  1208.5.8, 1322.5(2)| |ASME B16.1-2020|Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125,
  and 250|Fittings|1208.5.11.1|

  336 2025 CALIFORNIA PLUMBING CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  REFERENCED STANDARDS

  TABLE 1701.1 (continued) REFERENCED STANDARDS

  STANDARD NUMBER	STANDARD TITLE	APPLICATION	REFERENCED SECTION
  ASME B16.3-2021	Malleable Iron Threaded Fittings: Classes 150 and 300	Fittings	Table 604.1, Table 701.2
  ASME B16.4-2021	Gray Iron Threaded Fittings: Classes 125 and 250	Fittings	Table 604.1
  ASME B16.5-2020	Pipe Flanges and Flanged Fittings: NPS1⁄2 through NPS 24 Metric/Inch	Fittings	1208.5.11.2(1)
  ASME B16.12-2019	Cast Iron Threaded Drainage Fittings	Fittings	Table 701.2
  ASME B16.15-2018	Cast Copper Alloy Threaded Fittings: Classes 125 and 250	Fittings	Table 604.1
  ASME B16.18-2018	Cast Copper Alloy Solder Joint Pressure Fittings	Fittings	Table 604.1
  ASME B16.20-2017	Metallic Gaskets for Pipe Flanges	Joints	1208.5.12.2
  ASME B16.21-2021	Nonmetallic Flat Gaskets for Pipe Flanges	Joints	1208.5.12.3
  ASME B16.22-2018	Wrought Copper and Copper Alloy Solder-Joint Pressure Fit- tings	Fittings	Table 604.1, 1321.1
  ASME B16.23-2016	Cast Copper Alloy Solder Joint Drainage Fittings: DWV	Fittings	Table 701.2
  ASME B16.24-2016	Cast Copper Alloy Pipe Flanges, Flanged Fittings, and Valves: Classes 150, 300, 600, 900, 1500, and 2500	Fittings	1208.5.11.3
  ASME B16.

• CPC § 5.10.1.2 Medium relevance — show source text

  5.10.1.2(2)|Table E 503.5.10(2)| |E 503.5.10.1.2|E 503.5.10| |E 503.5.10.2 – E 503.5.10.2.2|E 503.5.10.1 – E 503.5.10.1.2| |E 503.5.12.1|E 503.5.12| |E 503.5.12.2|E 503.5.12.1| |E 503.6.5.4|E 503.6.5.4.1|

  xxii 2025 CALIFORNIA MECHANICAL CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

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  Uniform Mechanical Code – 2024 Edition:

  The Uniform Mechanical Code contains complete requirements for the installation and maintenance of heating, ventilating, cooking and refrigeration systems.

  Uniform Mechanical Code Illustrated Training Manual:

  Contains technical diagrams and illustrations that demonstrate the intent and use of the UMC. A great reference for everyone involved in Mechanical HVACR design and installation.

  Uniform Mechanical Code Study Guide:

  The Study Guide is a complete self-study course for learning the UMC. A big help in getting ready for a certification exam! This book is the perfect complement to the UMC Illustrated Training Manual.

  Guide to Important Code Questions to the Uniform Mechanical Code:

  An excellent reference for learning and understanding mechanical code changes and identifies code changes between editions. It is a useful tool for preparing code change proposals.

  Uniform Plumbing Code – 2024 Edition:

  The Uniform Plumbing Code is the most widely adopted plumbing code in the world. The 2024 edition contains complete “turnkey” requirements for the installation and maintenance of plumbing systems, all in one easy to use book.

  Uniform Plumbing Code Illustrated Training Manual:

  The UPC Illustrated Training Manual is an excellent reference for anyone involved in the plumbing industry. It contains an extensive definitions section and several hundred comprehensive technical diagrams and illustrations. It serves as a textbook, and it also is useful as a valuable tool for explaining the intent and use of the Code.

  Uniform Plumbing Code Study Guide:

  This book is the perfect complement to the UPC Illustrated Training Manual. Alone, it constitutes a complete self-study course for learning the UPC. It has hundreds of questions, general practice exams, and plumbing math, pipe sizing exercises and fitting identification. A big help in getting you ready for a certification exam!

  Guide to Important Code Questions to the Uniform Plumbing Code:

  An excellent reference for learning and understanding plumbing code changes and identifies code changes between editions. It is a useful tool for preparing code change proposals.

  2025 CALIFORNIA MECHANICAL CODE xxiii

• California Plumbing Code Medium relevance — show source text

  
  LEADER,
  OR PIPE|FLOW|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)|MAXIMUM ALLOWABLE HORIZONTAL PROJECTED ROOF AREAS AT VARIOUS RAINFALL RATES
  (square feet)**| |inches|gpm1|1 (in/h)|2 (in/h)|3 (in/h)|4 (in/h)|5 (in/h)|6 (in/h)|7 (in/h)|8 (in/h)|9 (in/h)|10 (in/h)|11 (in/h)|12 (in/h)| |2|30|2880|1440|960|720|575|480|410|360|320|290|260|240| |3|92|8800|4400|2930|2200|1760|1470|1260|1100|980|880|800|730| |4|192|18 400|9200|6130|4600|3680|3070|2630|2300|2045|1840|1675|1530| |5|360|34 600|17 300|11 530|8650|6920|5765|4945|4325|3845|3460|3145|2880| |6|563|54 000|27 000|17 995|13 500|10 800|9000|7715|6750|6000|5400|4910|4500| |8|1208|116 000|58 000|38 660|29 000|23 200|19 315|16 570|14 500|12 890|11 600|10 545|9600|

• CPC § 906.3 Medium relevance — show source text

  2, 906.3, 906.6, 1001.2, 1001.3, 1002.1, 1002.2, 1002.3, 1002.4, 1004.1, 1006.1, 1006.2, 1006.3, 1006.4, 1010.1, 1011.1, 1011.2.1, 1011.2.2, 1011.3, 1011.5.1, 1011.5.2, 1011.5.3, 1011.5.6, 1011.6.1, 1011.6.1.1, 1011.6.3, 1011.7.1, 1011.7.2, 1011.7.3, 1011.8.1, 1011.8.2, 1011.8.3, 1101.2, 1101.3, 1101.5, 1101.7, 1102.1, 1102.2, 1102.3, 1103.1, 1103.2, 1103.3, 1201.4, 1202.2, 1203.12, 1204.2, 1204.9, 1206.1, 1302.1.2, 1302.1.3, 1302.1.4, 1303.1.3, 1304.1.1, 1305.2.1, 1305.2.1.1, 1305.2.2, 1305.2.2.1, 1305.2.3.2, 1305.2.3.3, 1305.2.4.1, 1305.2.5, 1305.2.5.1, 1305.2.6, 1305.2.7.1, 1305.2.8, 1305.2.9, 1305.2.9.1, 1305.2.10, 1305.2.10.1, 1305.2.11, 1305.2.11.1, 1305.2.12.1, 1305.2.13, Table 1305.2.15, 1305.2.15.1, 1305.2.16.1, 1305.2.17, 1305.2.17.1, 1305.2.18, 1305.2.18.1, 1305.2.19, Table 1305.2.19, 1305.2.20, 1305.2.20.1, 1307.1.1, 1401.2, 1402.1, 1402.2, 1402.2.1, 1402.3, 1402.4, 1402.5, 1402.6, 1501.5, 1504.1.1, 1504.1.4.1, 1504.1.7, 1509.1, 1509.3, 1510.1

  CEC — 25 : California Energy Code

  302.2, 702.7, 708.1, 809.1, 907.1, 1104.1

• California Plumbing Code Medium relevance — show source text

  
  74
  127
  164
  187
  207
  246|3004
  2004
  1981
  1944
  1908
  1873
  1807|1550
  1310
  1289
  1254
  1220
  1185
  1130|0
  98
  164
  209
  237
  260
  305|4252
  2786
  2759
  2716
  2674
  2633
  2555|2170
  1800
  1775
  1733
  1692
  1650
  1585| |50|0
  2
  5
  10
  15
  20
  30|0
  26
  65
  86
  100
  113
  141|1297
  975
  960
  935
  911
  888
  844|708
  615
  605
  589
  572
  556
  522|0
  33
  77
  101
  117
  131
  161|1730
  1276
  1259
  1230
  1203
  1176
  1125|952
  813
  798
  773
  747
  722
  670|0
  41
  90
  118
  136
  151
  183|2231
  1620
  1600
  1567
  1536
  1505
  1446|1195
  1010
  996
  972
  948
  924
  876|0
  66
  118
  154
  177
  195
  232|3441
  2431
  2406
  2366
  2327
  2288
  2214|1825
  1513
  1495
  1466
  1437
  1408
  1349|0
  86
  151
  196
  222
  244
  287|4934
  3409
  3380
  3332
  3285
  3239
  3150|2550
  2125
  2102
  2064
  2026
  1987
  1910| |100|0
  2
  5
  10
  15
  20
  30
  50|0
  21
  60
  80
  93
  105
  131
  197|1411
  1155
  1141
  1118
  1095
  1073
  1029
  944|770
  700
  692
  679
  666
  653
  627
  575|0
  25
  71
  94
  109
  122
  149
  217|1908
  1536
  1519
  1492
  1465
  1438
  1387
  1288|1040
  935
  926
  910
  895
  880
  849
  787|0
  30
  82
  108
  126
  141
  170
  241|2491
  1975
  1955
  1923
  1892
  1861
  1802
  1688|1310
  1170
  1159
  1142
  1124
  1107
  1071
  1000|0

• California Plumbing Code Medium relevance — show source text

  
  81
  135
  172
  195
  217|2637
  1694
  1674
  1641
  1609
  1578|1350
  1100
  1079
  1045
  1018
  990|0
  107
  174
  220
  248
  273|3701
  2343
  2320
  2282
  2245
  2210|1900
  1520
  1498
  1460
  1425
  1390| |30|0
  2
  5
  10
  15
  20
  30|0
  33
  69
  91
  105
  119
  149|1173
  826
  811
  788
  765
  743
  702|650
  535
  524
  507
  490
  473
  444|0
  42
  82
  107
  124
  139
  171|1548
  1072
  1055
  1028
  1002
  977
  929|855
  700
  688
  668
  648
  628
  594|0
  54
  96
  125
  143
  160
  195|1977
  1351
  1332
  1301
  1272
  1243
  1189|1060
  865
  851
  829
  807
  784
  745|0
  74
  127
  164
  187
  207
  246|3004
  2004
  1981
  1944
  1908
  1873
  1807|1550
  1310
  1289
  1254
  1220
  1185
  1130|0
  98
  164
  209
  237
  260
  305|4252
  2786
  2759
  2716
  2674
  2633
  2555|2170
  1800
  1775
  1733
  1692
  1650
  1585| |50|0
  2
  5
  10
  15
  20
  30|0
  26
  65
  86
  100
  113
  141|1297
  975
  960
  935
  911
  888
  844|708
  615
  605
  589
  572
  556
  522|0
  33
  77
  101
  117
  131
  161|1730
  1276
  1259
  1230
  1203
  1176
  1125|952
  813
  798
  773
  747
  722
  670|0
  41
  90
  118
  136
  151
  183|2231
  1620
  1600
  1567
  1536
  1505
  1446|1195
  1010
  996
  972
  948
  924
  876|0

• CPC § 405.2.6 Medium relevance — show source text

  [BS] 405.2.6 Flood hazard areas. In flood hazard areas, buildings that have sustained substantial damage shall be brought into compliance with Section 1612 of the California Building Code or Section R306 of the California Residential Code, as applicable.

  SECTION 406—ELECTRICAL

  [OSHPD 1R, 2, 4 & 5] Not adopted by OSHPD. Existing electrical wiring and equipment undergoing repair shall be in accordance with Title 24 Part 3 California Electrical Code (CEC).

  406.1 General. Repairs to existing electrical wiring and equipment shall be in accordance with the California Electrical Code.

  406.1.1 Reconditioned electrical equipment. Reconditioned electrical equipment shall comply with the California Electrical Code . Electrical equipment prohibited from being reconditioned by the applicable sections of the California Electrical Code shall not be reconditioned unless permitted by NFPA 99.

  406.1.2 Health care facilities. Portions of electrical systems being repaired in Group I-2, ambulatory care facilities and outpatient clinics shall comply with NFPA 99 requirements for repairs.

  SECTION 407—MECHANICAL

  407.1 General. Existing mechanical systems undergoing repair shall not make the building less complying than it was before the damaged occurred. [HCD 1, HCD 2 & BSC] Existing mechanical systems undergoing repair shall comply with the California Mechanical Code.

  SECTION 408—PLUMBING

  408.1 Materials. Plumbing materials and supplies shall not be used for repairs that are prohibited in the California Plumbing Code .

  [HCD 1, HCD 2, BSC & BSC-CG] Existing plumbing systems undergoing repair shall comply with the California Plumbing Code and Divi- sion 4.3 or Division 5.3 of the CALGreen Code, as applicable.

  408.2 Water closet replacement. The maximum water consumption flow rates and quantities for all replaced water closets shall be 1.28 gallons (4.8 L ) per flushing cycle.

  408.3 Health care facilities. Portions of medical gas systems being repaired in Group I-2, ambulatory care facilities and outpatient clinics shall comply with NFPA 99 requirements for repairs.

  4-4 2025 CALIFORNIA EXISTING BUILDING CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  CALIFORNIA EXISTING BUILDING CODE – MATRIX ADOPTION TABLE

  CHAPTER 4A – REPAIRS [OSHPD 1]

  (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

• CPC § 130.1 Medium relevance — show source text

  0(c)4, 130.1(b), 160.5(b)1 Stack-Gas 120.6(c), 120.9(c), 160.4(e) Stairwell 130.1(a), 130.1(c)6, 130.1(c)7, Table 140.6-C Standard Charge Verification Procedure 150.1(c)7, 150.2(b)1F, 160.5(b), Table 170.2M, 170.2(c)2B, 180.2(b)2A Standard Design 141.0(a)2, 141.0(b)3, Table 141.0-E, 150.1(b), 150.1(b)3, 150.2(a)2B, 150.2(b)2, Table 150.2-D, 170.1, 180.1(b) Standard Design For An Altered Component 141.0(b), Table 141.0-E, 150.2(b), Table 150.2-D, 180.2(c) Standard Test Conditions 110.10(b)1B Standby Loss (Controls) 110.2(d) Start/Stop Controls 120.2(k) State Buildings 110.3(c)5 Static Pressure 120.6(d), 120.9(a), 140.4(h), 140.4(k)6, 150.0(o), 160.2(b), Table 160.2-H, 160.3(b)5L, 160.4(e) Static Pressure Probe 150.0(m), 160.3(b)5G-L Static Pressure Sensor 140.4(c)2, 170.2(c) Steady-State Design Loads 140.4(b)12 Steady-State Operation 110.2(a), 110.3(b) Steam Trap 120.6(i) Stepped Dimming 130.1(f) Storage Tank 110.3(c)3, 110.3(c)4, 110.8(d), 120.3(a), 150.1(c)8, 150.2(a), 150.2(b)1H, 170.2(d), 180.2(b)3 Storage Tank Insulation 150.0(j) Storage Type Water Heater 150.1(c)8 Structural Design Loads 110.10(b)4 Structurally Insulated Panel (SIP) 140.3(a)9 Stucco 140.3(a)9 Subdivision 10-109(c), 10-109(d), 110.10(a), 110.1(c), 140.6(a), 150.1(a), 170.0(a), 170.2(e) Suction Group 120.6(a), 120.6(b)2 Suction Line 110.4(b), 150.0(p) Suction Piping 120.3(b), 160.3(c), 160.4(f) Summary of Commissioning Requirements 120.8(a) Summer Dehumidification 140.4(b)2, 170.2(c) Sunrise/Sunset 110.9(b)1 Supplementary Heating 110.2(b), 150.1(c)6 Supply Air 120.1(c), 120.1(f), 120.2(i),

• California Plumbing Code Medium relevance — show source text

  
  5
  10
  15
  20|NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA|38
  35
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA|73
  67
  59
  NA
  NA|NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA|123
  115
  105
  95
  80|NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA|200
  183
  170
  156
  144|163
  NA
  NA
  NA
  NA|520
  NA
  NA
  NA
  NA|273
  252
  235
  217
  202| |30|2
  5
  10
  15
  20
  30|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|41
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|81
  75
  66
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|136
  127
  113
  105
  88
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|215
  196
  182
  168
  155
  NA|158
  NA
  NA
  NA
  NA
  NA|578
  NA
  NA
  NA
  NA
  NA|302
  279
  260
  240
  223
  182| |50|2
  5
  10
  15
  20
  30|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|91
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|160
  149
  136
  124
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|250
  228
  212
  195
  180
  NA|NA
  NA
  NA
  NA
  NA
  NA|NA
  NA
  NA
  NA
  NA
  NA|350
  321
  301
  278
  258
  NA| |Minimum
  internal area of
  chimney
  (square inches)|Minimum
  internal

• California Plumbing Code Medium relevance — show source text

  number in each box is
  keyed to the last number in th
  Item Code column in the Table
  For example:
  46
  71
  100
  24
  108
  28
  59
  63
  23
  66
  60
  27
  26
  25
  30
  32
  22
  51
  53
  54
  55
  52
  56
  65
  101
  104
  58
  19
  33
  64
  18
  74
  86
  90
  105
  106
  113
  111
  31
  48
  50
  21
  61
  72
  73
  76
  70
  85
  94
  107
  110
  92
  29
  40
  44
  15
  62
  67
  68
  69
  78
  96
  80
  17
  20
  42
  13
  82
  98
  11
  34
  36
  7
  38
  41
  49
  84
  89
  93
  5
  9
  35
  3
  37
  43
  45
  75
  39
  79
  95
  97
  109
  91
  8
  14
  16
  1
  47
  77
  81
  99
  4
  6
  10
  2
  12
  57
  83
  102
  112|W-9-M-66
  The number in each box is
  keyed to the last number in th
  Item Code column in the Table
  For example:
  46
  71
  100
  24
  108
  28
  59
  63
  23
  66
  60
  27
  26
  25
  30
  32
  22
  51
  53
  54
  55
  52
  56
  65
  101
  104
  58
  19
  33
  64
  18
  74
  86
  90
  105
  106
  113
  111
  31
  48
  50
  21
  61
  72
  73
  76
  70
  85
  94
  107
  110
  92
  29
  40
  44
  15
  62
  67
  68
  69
  78
  96
  80
  17
  20
  42
  13
  82
  98
  11
  34
  36
  7
  38
  41
  49
  84
  89
  93
  5
  9
  35
  3
  37
  43
  45
  75
  39
  79
  95
  97
  109
  91
  8
  14
  16
  1
  47
  77
  81
  99
  4
  6
  10
  2
  12
  57
  83
  102
  112|W-9-M-66
  The number in each box is
  keyed to the last number in th
  Item Code column in the Table
  For

• California Plumbing Code Medium relevance — show source text

  |100 psf|1 hr
  23 min|||7|1, 2|11/3| |F/C-4-RC-9|4″|4″ deep (4370 psi);1/4″ reinforcement bars
  at 6″ pitch with3/4″ cover;1/4″ main rein-
  forcement bars at 4″ pitch perpendicular
  with1/2″ cover; 13′1″ span restrained.|150 psf|2 hrs|||7|1, 3|2| |F/C-4-RC-10|4″|4″ thick (5140 psi) deck;1/4″ reinforce-
  ment bars at 71/2″ pitch with7/8″ cover;3/8″
  main reinforcement bars at 33/4″ pitch
  perpendicular with1/2″ cover; 13′1″ span
  restrained.|140 psf|1 hr
  16 min|||7|1, 5|11/4| |F/C-4-RC-11|4″|4″ thick (4000 psi) concrete deck;
  3″ × 11/2″ × 4 lbs R.S.J.; 2′6″ C.R.S.; flush
  with top surface; 4″ × 6″ x 13 SWG mesh
  reinforcement 1″ from bottom of slab; 6′6″
  span restrained.|150 psf|2 hrs|||7|1, 3|2| |F/C-4-RC-12|4″|4″ deep (2380 psi) concrete deck;
  3″ × 11/2″ × 4 lbs R.S.J.; 2′6″ C.R.S.; flush
  with top surface; 4″ × 6″ x 13 SWG mesh
  reinforcement 1″ from bottom surface;
  6′6″ span restrained.|150 psf|1 hr
  3 min|||7|1, 2|1| |F/C-4-RC-13|41/2″|41/2″ thick (5200 psi) deck;1/4″ reinforce-
  ment bars at 71/4″ pitch with7/8″ cover;3/8″
  main reinforcement bars at 33/4″ pitch
  perpendicular with1/2″ cover; 13′1″ span
  restrained.|140 psf|2 hrs|||7|1, 3|2| |F/C-4-RC-14|41/2″|41/2″ deep (2525 psi) concrete deck;1/4″
  reinforcement bars at 71/2″ pitch with7/8″
  cover;3/8″ main reinforcement bars at
  33/8″ pitch perpendicular with1/2″ cover;
  13′1″ span restrained.|150 psf|42 min|||7|1, 5|2/3| |F/C-4-RC-15|41/2″|41/2″ deep (4830 psi) concrete deck;
  11/2″ × No.

• CPC § 404.10.2 Medium relevance — show source text

  404.10.2 Clearance of fuel. Defensible space shall be provided around water tank structures, water supply pumps and pump houses in accordance with Section 603.

  2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE 4-7

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  WILDLAND-URBAN INTERFACE AREA REQUIREMENTS

  404.10.3 Standby power. Standby power shall be provided to pumps, controllers and related electrical equipment so that stationary water supply facilities within the wildland-urban interface area that are dependent on electrical power can provide the required water supply. The standby power system shall be in accordance with Section 2702 of the California Building Code and Section 1203 of the California Fire Code . The standby power source shall be capable of providing power for not less than 2 hours.

  Exceptions:

  1. Where approved by the code official, a standby power supply is not required where the primary power service to the stationary water supply facility is underground.
  2. A standby power supply is not required where the stationary water supply facility serves not more than one singlefamily dwelling.

  �

  4-8 2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE

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  CALIFORNIA WILDLAND-URBAN INTERFACE CODE – MATRIX ADOPTION TABLE

  CHAPTER 5 – SPECIAL BUILDING CONSTRUCTION REGULATIONS

  (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

  Adopting Agency	BSC	BSC- CG	SFM	Col5	HCD	Col7	Col8	DSA	Col10	OSHPD	Col12	Col13	Col14	Col15	Col16	BSCC	DPH	AGR	DWR	CEC	CA	SL	SLC
  Adopting Agency	BSC	BSC- CG	T-24	T-19*	1	2	1/AC	AC	SS	1	1R	2	3	4	5	5	5	5	5	5	5	5	5
  Adopt Entire Chapter
  Adopt Entire Chapter as amended (amended sections listed below)			X
  Adopt only those sections that are listed below
  [California Code of Regulations, Title 19, Division 1]
  Chapter / Section
  501.1			X
  501.2			X
  501.4 – 501.4.1			X
  502_Reserved_			X
  503.1			X
  503.

• CWUIC § 1203 Medium relevance — show source text

  A107.5 Protection of electrical power supplies. Where electrical pumps are used to provide the required water supply, such pumps shall be connected to a standby power source to automatically maintain electrical power in the event of power loss. The standby power source shall be capable of providing power for not less than 2 hours in accordance with Chapter 27 of the California Building Code, Section 1203 of the California Fire Code and the California Electrical Code.

  Exception: A standby power source is not required where the primary power service to pumps is underground as approved by the code official.

  SECTION A108—LAND USE LIMITATIONS

  A108.1 General. Temporary fairs, carnivals, public exhibitions and similar uses must comply with all other provisions of this code in addition to enhanced ingress and egress requirements.

  A108.2 Objective. The increased public use of land or structures in wildland-urban interface areas increases the potential threat to life safety. The provisions of this section are intended to reduce that threat.

  A108.3 Permits. Temporary fairs, carnivals, public exhibitions or similar uses shall not be allowed in a designated wildland-urban interface area, except by permit from the code official.

  Permits shall incorporate such terms and conditions that will reasonably safeguard public safety and property.

  A108.4 Access roadways. In addition to the requirements in Section 403, access roadways shall be not less than 24 feet (7315 mm) wide and posted NO PARKING. Two access roadways shall be provided to serve the permitted use area.

  Where required by the code official to facilitate emergency operations, approved emergency vehicle operating areas shall be provided.

  APPENDIX A-6 2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  APPENDIX A—GENERAL REQUIREMENTS

  SECTION A109—REFERENCED STANDARDS

  A109.1 General. See Table A109.1 for standards that are referenced in various sections of this appendix. Standards are listed by the standard identification with the effective date, standard title and the section or sections of this appendix that reference the standard.

  TABLE A109.1—REFERENCED STANDARDS	Col2	Col3
  STANDARD ACRONYM	STANDARD NAME	SECTIONS HEREIN REFERENCED
  CBC—25	California Building Code	A107.5
  CFC—25	California Fire Code	A104.6, A105.1, A107.5
  CEC—25	California Electrical Code	A107.5

  2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE APPENDIX A-7

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  APPENDIX A-8 2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  CALIFORNIA WILDLAND-URBAN INTERFACE CODE – MATRIX ADOPTION TABLE

  APPENDIX B – VEGETATION MANAGEMENT PLAN

  (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

  (Not adopted by the State Fire Marshal)

• CPC § 1220.4.2 Medium relevance — show source text

  8|1220.4.2 – 1220.4.6| |1221.7|1221.6| |1308.2 – 1308.4.1|1308.3 – 1308.5.1| |Table 1308.3.1|Table 1308.4.1| |1308.4.2|1308.5.2| |1308.4.2.2 – 1308.6.4|1308.5.2.1 – 1308.7.3| |Table 1308.4.6.2|Table 1308.5.6.2| |1308.6.5 – 1308.13.1|1308.7.7 – 1308.14.1| |1312.1.2 – 1312.1.3|1312.1.1 – 1312.1.2| |Chapter 17|Appendix F| |Chapter 18|Chapter 17| |D 103.2|D 103.1| |E 503.5.6.7|E 503.5.6.6| |E 503.5.7.2 – E 503.5.7.6|E 503.5.7.1 – E 503.5.7.5| |Table E 503.5.7.2|Table E 503.5.7.1| |Table E 503.5.7.6|Table E 503.5.7.5| |Table E 503.5.10.1.2(1)|Table E 503.5.10(1)| |Table E 503.5.10.1.2(2)|Table E 503.5.10(2)| |E 503.5.10.1.2|E 503.5.10| |E 503.5.10.2 – E 503.5.10.2.2|E 503.5.10.1 – E 503.5.10.1.2| |E 503.5.12.1|E 503.5.12| |E 503.5.12.2|E 503.5.12.1| |E 503.6.5.4|E 503.6.5.4.1|

  xxii 2025 CALIFORNIA MECHANICAL CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

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  Uniform Mechanical Code – 2024 Edition:

  The Uniform Mechanical Code contains complete requirements for the installation and maintenance of heating, ventilating, cooking and refrigeration systems.

  Uniform Mechanical Code Illustrated Training Manual:

• CPC § 1201.3 Medium relevance — show source text

  1201.3 Mixed system installation. Where mixed systems are approved, the aggregate nameplate kWh energy of all energy storage systems in a fire area shall not exceed the maximum quantity specified for any of the energy systems in this chapter. Where required by the fire code official, a hazard mitigation analysis shall be provided and approved in accordance with Section 104.2.2 to evaluate any potential adverse interaction between the various energy systems and technologies.

  SECTION 1202—DEFINITIONS

  1202.1 Definitions. The following terms are defined in Chapter 2:

  BATTERY SYSTEM, STATIONARY STORAGE.

  BATTERY TYPES.

  CAPACITOR ENERGY STORAGE SYSTEM.

  CRITICAL CIRCUIT.

  EMERGENCY POWER SYSTEM.

  ENERGY STORAGE MANAGEMENT SYSTEMS.

  ENERGY STORAGE SYSTEM (ESS).

  ENERGY STORAGE SYSTEM, ELECTROCHEMICAL.

  ENERGY STORAGE SYSTEM, MOBILE.

  ENERGY STORAGE SYSTEM, WALK-IN UNIT.

  ENERGY STORAGE SYSTEM CABINET.

  ENERGY STORAGE SYSTEM COMMISSIONING.

  ENERGY STORAGE SYSTEM DECOMMISSIONING.

  FUEL CELL POWER SYSTEM, STATIONARY.

  PORTABLE GENERATOR.

  STANDBY POWER SYSTEM.

  SECTION 1203—EMERGENCY AND STANDBY POWER SYSTEMS

  1203.1 General. Emergency power systems and standby power systems required by this code or the California Building Code shall comply with Sections 1203.1.1 through 1203.1.9.

  1203.1.1 Stationary generators. Stationary emergency and standby power generators required by this code shall be listed in accordance with UL 2200.

  2025 CALIFORNIA FIRE CODE 12-3

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  ENERGY SYSTEMS

  1203.1.2 Fuel line piping protection. Fuel lines supplying a generator set inside a high-rise building or new Group I-2 occupancy having occupied floors located more than 75 feet above the lowest level of fire department vehicle access shall be separated from areas of the building other than the room the generator is located in by one of the following methods:

  1. A fire-resistant pipe-protection system that has been tested in accordance with UL 1489. The system shall be installed as tested and in accordance with the manufacturer’s installation instructions, and shall have a rating of not less than 2 hours. Where the building is protected throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1, the required rating shall be reduced to 1 hour.

  2. An assembly that has a fire-resistance rating of not less than 2 hours. Where the building is protected throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1, the required fire-resistance rating shall be reduced to 1 hour.

  3. Other approved methods.

  1203.1.3 Installation. Emergency power systems and standby power systems shall be installed in accordance with the California Building Code, the California Electrical Code, NFPA 110 and NFPA 111.

  1203.1.3.1 Combustion engines and gas turbines. The installation of combustion engines and gas turbines shall be in accor- dance with California Building Code Section 442 and NFPA 37.

• CPC § 12-01 Medium relevance — show source text

  Figure 2 Pad Top View (50” x 52” x 18” box-pad shown)

  C L of Pad ±7” 2	±10”
  ±7” 2 of Pad CL

  Detail A Placement of Conduits

  ± 4” ± 7”

  Detail B Placement of Single Cable Conduits

  Primary Joint Trench Secondary

  Sweep Plastic Duct (40-foot radius minimum)

  Ser P B Gas R/W	Col2	Col3	Col4	Col5	Col6	Col7
  Ser Gas R/W P B	Ser Gas R/W P B	s	s	s	s	s
  Ser Gas R/W P B	Ser Gas R/W P B	s
  Ser Gas R/W P B	Ser Gas R/W P B	s
  Ser Gas R/W P B	Ser Gas R/W P B	s
  Primary Secondary
  B Services	B Services	B Services	B Services	B Services	B Services	B Services

  Figure 3 Facilities Plan View

  Rev. #10: 12-01-19 064309 Page 5 of 7

  UG-1: Transformers Greenbook Box-Pad For Pad-Mounted Transformers

  Typical Box-Pad Installation (continued)

  Section A-A Pad Front View

  Section B-B Pad Side View

  h ite	Col2	Grade

  064309 Page 6 of 7 Rev. #10: 12-01-19

  UG-1: Transformers Greenbook Box-Pad For Pad-Mounted Transformers

  This document is also found in the Electric and Gas Service Requirements Manual (Greenbook). This document has been split. See Document 064309A in the “Transformers” section of the For Reference Only Manual (FRO) for its remainder.

  Revision Notes

  Revision 10 has the following changes:

  1. Added Note 20 on Page 2.

  2. Updated References on Page 3.

  Rev. #10: 12-01-19 064309 Page 7 of 7

  OH: Services UG-1: Services Greenbook EMWP

  Prepared by: SXZO

• CPC § 404.9 Medium relevance — show source text

  May_ 1988.

  404.9 Testing and maintenance. Water sources, draft sites, hydrants and other fire protection equipment required by this code shall be subject to periodic tests as required by the code official. Such equipment installed under the provisions of this code shall be maintained in an operative condition at all times and shall be repaired or replaced where defective. Additions, repairs, alterations and servicing of such fire protection equipment and resources shall be in accordance with approved standards.

  404.10 Reliability. Water supply reliability shall comply with Sections 404.10.1 through 404.10.3.

  404.10.1 Objective. The objective of this section is to increase the reliability of water supplies by reducing the exposure of vegetative fuels to electrically powered systems.

  404.10.2 Clearance of fuel. Defensible space shall be provided around water tank structures, water supply pumps and pump houses in accordance with Section 603.

  2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE 4-7

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  WILDLAND-URBAN INTERFACE AREA REQUIREMENTS

  404.10.3 Standby power. Standby power shall be provided to pumps, controllers and related electrical equipment so that stationary water supply facilities within the wildland-urban interface area that are dependent on electrical power can provide the required water supply. The standby power system shall be in accordance with Section 2702 of the California Building Code and Section 1203 of the California Fire Code . The standby power source shall be capable of providing power for not less than 2 hours.

  Exceptions:

  1. Where approved by the code official, a standby power supply is not required where the primary power service to the stationary water supply facility is underground.
  2. A standby power supply is not required where the stationary water supply facility serves not more than one singlefamily dwelling.

  �

  4-8 2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  CALIFORNIA WILDLAND-URBAN INTERFACE CODE – MATRIX ADOPTION TABLE

  CHAPTER 5 – SPECIAL BUILDING CONSTRUCTION REGULATIONS

  (Matrix Adoption Tables are nonregulatory, intended only as an aid to the code user. See Chapter 1 for state agency authority and building applications.)

• CPC § 12-2 Medium relevance — show source text

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  12-2 2025 CALIFORNIA FIRE CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  12 ENERGY SYSTEMS

  User notes:

  About this chapter: Chapter 12 was added to address the current energy systems found in this code, and is provided for the introduction of a wide range of systems to generate and store energy in, on and adjacent to buildings and facilities. The expansion of such energy systems is related to meeting today’s energy, environmental and economic challenges. Ensuring appropriate criteria to address the safety of such systems in building and fire codes is an important part of protecting the public at large, building occupants and emergency responders. More specifically, this chapter addresses standby and emergency power, portable generators, photovoltaic systems, fuel cell energy systems and energy storage systems.

  SECTION 1201—GENERAL

  1201.1 Scope. The provisions of this chapter shall apply to the installation, operation, maintenance, repair, retrofitting, testing, commissioning and decommissioning of energy systems used for generating or storing energy, including but not limited to energy storage systems under the exclusive control of an electric utility or lawfully designated agency. It shall not apply to equipment associated with the generation, control, transformation, transmission, or distribution of energy installations that is under the exclusive control of an electric utility or lawfully designated agency. Energy storage systems regulated by Section 1207 shall comply with this chapter, as appropriate, and NFPA 855.

  1201.2 Electrical wiring and equipment. Electrical wiring and equipment used in connection with energy systems shall be installed and maintained in accordance with this chapter, Section 603 and the California Electrical Code.

  1201.3 Mixed system installation. Where mixed systems are approved, the aggregate nameplate kWh energy of all energy storage systems in a fire area shall not exceed the maximum quantity specified for any of the energy systems in this chapter. Where required by the fire code official, a hazard mitigation analysis shall be provided and approved in accordance with Section 104.2.2 to evaluate any potential adverse interaction between the various energy systems and technologies.

  SECTION 1202—DEFINITIONS

  1202.1 Definitions. The following terms are defined in Chapter 2:

  BATTERY SYSTEM, STATIONARY STORAGE.

  BATTERY TYPES.

  CAPACITOR ENERGY STORAGE SYSTEM.

  CRITICAL CIRCUIT.

  EMERGENCY POWER SYSTEM.

  ENERGY STORAGE MANAGEMENT SYSTEMS.

  ENERGY STORAGE SYSTEM (ESS).

  ENERGY STORAGE SYSTEM, ELECTROCHEMICAL.

  ENERGY STORAGE SYSTEM, MOBILE.

  ENERGY STORAGE SYSTEM, WALK-IN UNIT.

  ENERGY STORAGE SYSTEM CABINET.

  ENERGY STORAGE SYSTEM COMMISSIONING.

  ENERGY STORAGE SYSTEM DECOMMISSIONING.

  FUEL CELL POWER SYSTEM, STATIONARY.

  PORTABLE GENERATOR.

  STANDBY POWER SYSTEM.

  SECTION 1203—EMERGENCY AND STANDBY POWER SYSTEMS

  1203.1 General. Emergency power systems and standby power systems required by this code or the California Building Code shall comply with Sections 1203.1.1 through 1203.1.9.

  1203.1.1 Stationary generators. Stationary emergency and standby power generators required by this code shall be listed in accordance with UL 2200.

  2025 CALIFORNIA FIRE CODE 12-3

• CPC § 2703.14.2 Medium relevance — show source text

  2703.14.2 Penetrations. Exhaust ducts penetrating fire barriers constructed in accordance with Section 707 of the California Building Code or horizontal assemblies constructed in accordance with Section 711 of the California Building Code shall be contained in a shaft of equivalent fire-resistance-rated construction. Exhaust ducts shall not penetrate fire walls. Fire dampers shall not be installed in exhaust ducts.

  2703.14.3 Treatment systems. Treatment systems for highly toxic and toxic gases shall comply with Chapter 60.

  2703.15 Emergency power system. An emergency power system shall be provided in Group H-5 occupancies in accordance with Section 1203. The emergency power system shall supply power automatically to the electrical systems specified in Section 2703.15.1 when the normal supply system is interrupted.

  2703.15.1 Required electrical systems. Emergency power shall be provided for electrically operated equipment and connected control circuits for the following systems:

  1. HPM exhaust ventilation systems.

  2. HPM gas cabinet ventilation systems.

  3. HPM exhausted enclosure ventilation systems.

  4. HPM gas room ventilation systems.

  5. HPM gas detection systems.

  6. Emergency alarm systems.

  7. Manual fire alarm systems.

  8. Automatic sprinkler system monitoring and alarm systems.

  9. Automatic alarm and detection systems for pyrophoric liquids and Class 3 water-reactive liquids required in Section 2705.2.3.4.

  10. Flow alarm switches for pyrophoric liquids and Class 3 water-reactive liquids cabinet exhaust ventilation systems required in Section 2705.2.3.4.

  11. Electrically operated systems required elsewhere in this code or in the California Building Code applicable to the use, storage or handling of HPM.

  2703.15.2 Exhaust ventilation systems. Exhaust ventilation systems are allowed to be designed to operate at not less than onehalf the normal fan speed on the emergency power system where it is demonstrated that the level of exhaust will maintain a safe atmosphere.

  2703.16 Sub-atmospheric pressure gas systems. Sub-atmospheric pressure gas systems (SAGS) shall be in accordance with NFPA 318.

  2025 CALIFORNIA FIRE CODE 27-7

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  SEMICONDUCTOR FABRICATION FACILITIES

  SECTION 2704—STORAGE

  2704.1 General. Storage of hazardous materials shall comply with Section 2703 and this section and other applicable provisions of this code.

  2704.2 Fabrication areas. Hazardous materials storage and the maximum quantities of hazardous materials in use and storage allowed in fabrication areas shall be in accordance with Sections 2704.2.1 through 2704.2.2.1.

  2704.2.1 Location of HPM storage in fabrication areas. Storage of HPM in fabrication areas shall be within approved or listed storage cabinets, gas cabinets, exhausted enclosures or within a workstation as follows:

  1. Flammable and combustible liquid storage cabinets shall comply with Section 5704.3.2.
  2. Hazardous materials storage cabinets shall comply with Section 5003.8.7.
  3. Gas cabinets shall comply with Section 5003.8.6. Gas cabinets for highly toxic or toxic gases shall also comply with Section 6004.1.2.
• CPC § 404.5 Medium relevance — show source text

  404.5 Adequate water supply. Fire-flow requirements shall be determined in accordance with Appendix B or BB of the California Fire Code, as applicable.

  404.6 Reserved.

  404.7 Obstructions. Access to water sources required by this code shall be unobstructed at all times. The fire department shall not be deterred or hindered from gaining immediate access to water source equipment, fire protection equipment or hydrants.

  404.8 Identification. Water sources, draft sites, hydrants and fire protection equipment and hydrants shall be clearly identified in a manner approved by the code official to identify location and to prevent obstruction by parking and other obstructions. Each fire hydrant and access to a water supply shall be identified in accordance with one of the following: 1. Where located along a driveway, a reflectorized blue marker with a minimum dimension of 3 inches (73 mm) shall be located on the driveway address sign and mounted on a fire-retardant post. 2. Where located along an access road: 2.2. A reflectorized blue marker with a minimum dimension of 3 inches (73 mm) shall be mounted on a fire-retardant post. The signpost shall be within 3 feet (914 mm) of said fire hydrant with the sign not less than 3 feet (914 mm) nor greater than 5 feet (1524 mm) above ground, in a horizontal position and visible from the driveway. 2.3. As specified in the State Fire Marshal’s Guidelines for Fire Hydrant Markings Along State Highways and Freeways, May 1988.

  404.9 Testing and maintenance. Water sources, draft sites, hydrants and other fire protection equipment required by this code shall be subject to periodic tests as required by the code official. Such equipment installed under the provisions of this code shall be maintained in an operative condition at all times and shall be repaired or replaced where defective. Additions, repairs, alterations and servicing of such fire protection equipment and resources shall be in accordance with approved standards.

  404.10 Reliability. Water supply reliability shall comply with Sections 404.10.1 through 404.10.3.

  404.10.1 Objective. The objective of this section is to increase the reliability of water supplies by reducing the exposure of vegetative fuels to electrically powered systems.

  404.10.2 Clearance of fuel. Defensible space shall be provided around water tank structures, water supply pumps and pump houses in accordance with Section 603.

  2025 CALIFORNIA WILDLAND-URBAN INTERFACE CODE 4-7

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  WILDLAND-URBAN INTERFACE AREA REQUIREMENTS

  404.10.3 Standby power. Standby power shall be provided to pumps, controllers and related electrical equipment so that stationary water supply facilities within the wildland-urban interface area that are dependent on electrical power can provide the required water supply. The standby power system shall be in accordance with Section 2702 of the California Building Code and Section 1203 of the California Fire Code . The standby power source shall be capable of providing power for not less than 2 hours.

• CPC § 5005.1.3 Medium relevance — show source text

  5005.1.3 Spill control and secondary containment for hazardous material liquids. Where required by other provisions of Section 5005, spill control and secondary containment shall be provided for hazardous material liquids in accordance with Section 5004.2.

  5005.1.4 Limit controls. Limit controls shall be provided in accordance with Sections 5005.1.4.1 through 5005.1.4.4.

  5005.1.4.1 High-liquid-level control. Open tanks in which liquid hazardous materials are used shall be equipped with a liquid-level limit control or other means to prevent overfilling of the tank.

  5005.1.4.2 Low-liquid-level control. Approved safeguards shall be provided to prevent a low-liquid level in a tank from creating a hazardous condition, including but not limited to, overheating of a tank or its contents.

  5005.1.4.3 Temperature control. Temperature control shall be provided in accordance with Section 5004.8.1.

  5005.1.4.4 Pressure control. Pressure control shall be provided in accordance with Section 5004.8.2.

  5005.1.5 Standby or emergency power. Where mechanical ventilation, treatment systems, temperature control, manual alarm, detection or other electrically operated systems are required by this code, such systems shall be provided with emergency or standby power in accordance with Section 1203.

  5005.1.5.1 Exempt applications. Standby power for mechanical ventilation, treatment systems and temperature control systems shall not be required where an approved fail-safe engineered system is installed.

  5005.1.6 Supervision and monitoring. Manual alarm, detection and automatic fire-extinguishing systems required by other provisions of Section 5005 shall be electrically supervised and monitored by an approved supervisory service or, where approved, shall initiate an audible and visual signal at a constantly attended on-site location.

  5005.1.7 Lighting. Adequate lighting by natural or artificial means shall be provided.

  5005.1.8 Fire protection systems. Indoor rooms or areas in which hazardous materials are dispensed or used shall be protected by an automatic sprinkler system or automatic fire-extinguishing system in accordance with Chapter 9. Sprinkler system design shall be not less than that required for Ordinary Hazard, Group 2, with a minimum design area of 3,000 square feet (279 m [2] ). Where the materials or storage arrangement are required by other regulations to be provided with a higher level of sprinkler system protection, the higher level of sprinkler system protection shall be provided.

  5005.1.9 Ventilation. Indoor dispensing and use areas shall be provided with exhaust ventilation in accordance with Section 5004.3.

  Exception: Ventilation is not required for dispensing and use of flammable solids other than finely divided particles.

  5005.1.10 Liquid transfer. Liquids having a hazard ranking of 3 or 4 in accordance with NFPA 704 shall be transferred by one of the following methods:

  1. From safety cans complying with UL 30.

  2025 CALIFORNIA FIRE CODE 50-25

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  HAZARDOUS MATERIALS—GENERAL PROVISIONS