Earlier editions: 2022
Chapter 2 — Wiring and Protection
San Francisco Building Inspection Commission Codes Art. 230 Services
San Francisco Building Inspection Commission Codes · 2026-08 edition · updated 2026-09-23 · San Francisco
Cite as: San Francisco Building Inspection Commission Codes Article 230 · Text as of 2026-09-23
230.43 Revise this section as follows:
230.43 Wiring Methods for 1000 Volts, Nominal, or Less.
(A) Acceptable Wiring Methods. Service-entrance conductors shall be installed in accordance with the applicable requirements of this Code covering the type of wiring method used and shall be limited to the following methods:
(1) [
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(2) [
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(3) Rigid metal conduit (RMC)
(4) Intermediate metal conduit (IMC)
(5) [
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(6) [ The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.
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(7) [ The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.
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(8) [
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(9) Busways
(10) Auxiliary gutters
(11) Rigid polyvinyl chloride conduit (PVC)
(12) [
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(13) [ The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.
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(14) Mineral-insulated, metal sheathed cable, Type MI
(15) [
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(16) [
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- (17) High density polyethylene conduit (HDPE)
(18) Non-metallic underground conduit with conductors (NUCC)
(19) Reinforced thermosetting resin conduit (RTRC)
(20) [
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(21) [ The arrow represents the location of language that has been deleted by San Francisco from the applicable California Code.
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(B) Raceway Size. Minimum raceway size shall comply with the following:
(1) Except as provided in Section 230.43(B)(2) and (3) the minimum size raceway installed for service entrance conductor shall be 1-1/4 inch (31.8 mm).
(2) Raceways for service entrance conductors for sign or billboard lighting shall not be smaller than 3/4 inch (19.1 mm) conduit.
(3) Installations consisting of not more than two 2-wire branch circuits may be supplied by No. 8 conductors in 3/4 inch (19.1 mm) conduit.
Exception: New service entrance conductors may be re-pulled in previously approved service raceways, provided the installation complies with the requirements of SFEC Section 89.116 and Chapters 1, 2 and 3.
Informational Note: Refer to electric utility service requirements for raceway sizes.
230.56 Revise this section as follows:
230.56 Service Conductor with the Higher Voltage to Ground. On a four-wire, delta-connected service, where the midpoint of one phase winding is grounded, the service conductor having the higher phase voltage to ground shall be durably and permanently marked by an outer finish that is [
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purple in color, or by other effective means, at each termination or junction point.
230.71(A) Revise this section and add two exceptions as follows:
230.71 Maximum Number of Disconnects. [
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(A) General. The service disconnecting means for each service permitted by 230.2, or for each set of serviceentrance conductors permitted by 230.40, Exception Nos. 1, 3, 4, or 5, shall consist of a single circuit breaker or switch and set of fuses.
For the purpose of this section, disconnecting means installed as part of listed equipment and used solely for the following shall not be considered a service disconnecting means:
(1) Power monitoring equipment
(2) Surge-protective device(s)
(3) Control circuit of the ground-fault protection system
(4) Power-operable service disconnecting means.
Exception No. 1:
a) Multi-Family Dwellings with a Maximum of (6) units, shall consist of not more than six switches or sets of circuit-breakers, or a combination of not more than six switches and sets of circuit breakers, mounted in a single enclosure, in a group of separate enclosures, or in or on a switchboard or in switchgear.
b) There shall be not more than six sets of disconnects per service grouped in any one location.
Exception No. 2: A Single Main Circuit Breaker or set of fuses shall be provided for each Dwelling Unit.
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