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Code Q&A

May 1, 2008 6:40 PM, By Mike Holt

Q. Can a 2-pole snap switch be used to switch a 277V and 120V circuit?

A. No. A multi-pole, general-use snap switch is not permitted to be fed by more than a single circuit unless the switch [404.8(C)]:

• Is listed and marked as a 2-circuit or 3-circuit switch, or
• The voltage rating of the switch is not less than the nominal line-to-line voltage of the two circuits supplying the switch.

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