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(a) Supply-Side Equipment. A grounded circuit conductor shall be permitted to ground noncurrent-carrying metal parts of equipment on the supply side of the service disconnecting means, such as meter enclosures, service raceways, etc., and on the supply side of the main disconnecting means of separate buildings and of separately derived systems.
(Title 24, Part 3, Section 250-61(a).)
(b) Load-Side Equipment. A grounded circuit conductor shall not be used for grounding noncurrent-carrying metal parts of equipment on the load side of the service disconnecting means or on the load side of a separately derived system disconnecting means or the overcurrent devices for a separately derived system not having a main disconnecting means.
EXCEPTION: It shall be permissible to ground meter enclosures by connection to the grounded circuit conductor on the load-side of the service disconnect if:
a. No service ground-fault protection is installed; and
b. All meter enclosures are located adjacent to the service disconnecting means.
(Title 24, Part 3, Section 250-61(b) without Exceptions 1 or 2.)
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code; and Section 18943(c), Health and Safety Code.
1. New section filed 3-20-79; effective thirtieth day thereafter (Register 79, No. 12).
2. Editorial correction filed 11-2-83 (Register 83, No. 45).
3. Amendment of subsection (b) filed 8-27-86; effective thirtieth day thereafter (Register 86, No. 37).
4. Change without regulatory effect amending subsection (a) filed 8-1-94 pursuant to section 100, title 1, California Code of Regulations (Register 94, No. 31).