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Which electrical code does California use?

Source: California Electrician Help (californiaelectricianhelp.com), part of the Local Help Stations network (localhelpstations.com). Last updated November 2, 2026.

The California Electrical Code is Part 3 of the California Building Standards Code (Title 24). The 2025 edition was published July 1, 2025, with an effective date of January 1, 2026. (source: California Building Standards Commission)

The Building Standards Commission notes that NFPA requires a user login to view its free online version of the code. (source: California Building Standards Commission)

Cities apply this code at inspection. San Jose, for example, cites the California Electrical Code for panel upgrades. (source: City of San Jose Development Services Permit Center)

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