Earlier editions: 2026-09
Title 9 — CONSTRUCTION CODES AND FIRE CODE›Division 2 — COUNTY BUILDING CODE›Chapter 1 — COUNTY ADOPTION OF THE CALIFORNIA BUILDING CODE WITH COUNTY AMENDMENTS
San Diego County Municipal Code § 3120.2 Main electrical service panel
San Diego County Municipal Code · 2026-10 edition · updated 2026-10-03 · San Diego County
Cite as: San Diego County Municipal Code § 3120.2 · Text as of 2026-10-03
Newly constructed single-family dwelling units shall include a main electrical service panel meeting Sections 3120.2.1 through 3120.2.3.
Sec. 3120.2.1 Minimum rating. The main electrical service panel shall have a minimum…¶
Sec. 3120.2.2 Type. The main electrical service panel shall not be of a type with a…¶
Sec. 3120.2.3 Reserved space for future solar photovoltaic system.¶
The main electrical service panel shall have reserved space complying with Sections 3120.2.3.1 and 3120.2.3.2 to allow for the installation of double-pole circuit breakers for a future solar photovoltaic system.
Sec. 3120.2.3.1 Location.¶
The reserved space for the solar photovoltaic circuit breaker shall be positioned at the opposite (load) end from the input feeder or main circuit breaker location.
Sec. 3120.2.3.2 Identification.¶
The reserved space for the solar photovoltaic circuit breaker shall be permanently and visibly marked as "For Future Solar Photovoltaic."
Sec. 3120.2.4 Reserved space for future electric vehicle charging system.¶
The main electrical service panel shall have reserved space to allow for the installation of a circuit breaker for a future electric vehicle charging system.
Sec. 3120.2.4.1 Identification. The reserved space for the electric vehicle charging…¶
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