Cal. Code Regs. Tit. 8, § 2833.2 - Load Interrupter Switches
Load interrupter switches may be used only if suitable fuses or circuits are used in conjunction with these devices to interrupt fault currents.
(a) Where these devices are
used in combination, they shall be coordinated electrically so that they will
safely withstand the effects of closing, carrying, or interrupting all possible
currents up to the assigned maximum short-circuit rating.
(b) Where more than one switch is installed
with interconnected load terminals to provide for alternate connection to
different supply conductors, each switch shall be provided with a conspicuous
sign reading: "WARNING -- SWITCH MAY BE ENERGIZED BY BACKFEED."
Notes
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
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