Code Q&A

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Jul 3, 2008 10:46 PM, By Mike Holt

Q. What are the requirements when installing a 120V switch in the same box with a 277V switch?

A. Snap switches must not be grouped or ganged in enclosures with other snap switches, receptacles, or similar devices if the voltage between devices exceeds 300V, unless the devices are separated by barriers [404.8(B)].

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