What NEC edition is California on in 2026?

California enforces the 2025 California Electrical Code, Title 24 Part 3, which is based on the 2023 NEC and became effective January 1, 2026.

Does California use the NEC directly?

No. California publishes the California Electrical Code as Title 24 Part 3, which is the NEC text with state amendments printed in. Local jurisdictions may add further amendments.

Which code edition applies to my permit?

Generally the edition in effect when the permit application was filed. A job permitted in 2025 usually stays on the 2022 CEC. Confirm with the plan checker on long running permits.

Which version of the NEC is California using right now?

California does not adopt the NEC directly. It publishes its own book, the California Electrical Code, as Part 3 of Title 24 of the California Code of Regulations. That book is the NEC with state amendments printed into it.

The current edition is the 2025 California Electrical Code. It is based on the 2023 NEC and it became effective January 1, 2026. The edition it replaced was the 2022 CEC, which was based on the 2020 NEC and ran from January 1, 2023 through the end of 2025.

The three year cycle

California runs a triennial cycle, and the state is always one NEC edition behind the national release because of the adoption process through the California Building Standards Commission. Intervening code adoption supplements can be published in July of the off years, so a mid cycle change is possible. Check the Building Standards Commission listing before an exam or a plan check if the date matters.

Which edition applies to your job

The code edition in force is normally the one in effect on the date the permit application was filed, not the date you are pulling wire. A project permitted in November 2025 is generally still a 2022 CEC job even if it finishes in 2026. Ask the plan checker rather than assuming, because some jurisdictions handle long running permits differently.

Local amendments on top

Cities and counties in California can adopt amendments that are more restrictive than the state code when they file a finding of local necessity. Los Angeles, San Francisco, and several other jurisdictions publish their own electrical code amendments. Solar ready and energy storage requirements from the California Energy Code, Title 24 Part 6, also interact with electrical design on new residential work.

What changed coming from the 2020 NEC

Because the 2025 CEC is built on the 2023 NEC, the notable shifts include the reorganized ampacity tables in 310.15, the expanded surge protective device requirement for dwelling unit services in 230.67, expanded GFCI coverage in 210.8, and the new emergency disconnect rules in 230.85. Contractors moving off the 2022 CEC should read 230.67 and 230.85 first, since those two drive service layout.

Field takeaway

Quote the 2025 CEC based on the 2023 NEC for anything permitted on or after January 1, 2026, and always confirm the local amendment set with the AHJ before ordering gear.