San Francisco has deleted language from the 2010 California Electrical Code from this paragraph. (A) General. The service disconnecting means for each service permitted by 230.2, or for each set of service-entrance conductors permitted by 230.40, Exception Nos. 1, 3, 4, or 5, shall consist of a single circuit breaker or switch and set of fuses. For the purpose of this section, disconnecting means installed as part of listed equipment and used solely for the following shall not be considered a service disconnecting means:
(1) Power monitoring equipment
(2) Surge-protective device(s)
(3) Control circuit of the ground-fault protection system
(4) Power-operable service disconnecting means.
Exception: In buildings with only residential occupancies not more than six switches or sets of circuit-breakers, or a combination of not more than six switches and sets of circuit breakers, mounted in a single enclosure, in a group of separate enclosures, or in or on a switchboard shall be allowed. There shall be not more than six sets of disconnects per service grouped in any one location. A single circuit breaker or set of fuses shall be provided for each dwelling unit.