Cal. Health & Saf. Code § 18670
The department shall adopt regulations regarding electrical wiring, fixtures, and equipment installed in parks that it determines are reasonably necessary for the protection of life and property and to carry out the purposes of this part. The department shall propose and submit building standards for approval pursuant to Chapter 4 (commencing with Section 18935) of Part 2.5 for the purposes described in this section. The building standards published in the California Building Standards Code and the other regulations adopted by the department shall apply to all electrical wiring, fixtures, and equipment installed within permanent buildings, except within a park in a city, county, or city and county that has adopted and is enforcing an electrical code with amendments adopted pursuant to Section 17958.5 and which city, county, or city and county is the enforcement agency.
Ca. Health and Saf. Code § 18670