NM CID ES-1 Practice Questions - New Mexico CID ES-1 Electrical Signs And Outline Lighting Examination Exam

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If a multiwire branch circuit supplies a sign or outline-lighting system, NEC 600.6 requires the switch or circuit breaker to do which of the following?

Open only the ungrounded conductor with the larger load Open the equipment grounding conductor first Open the grounded conductor only Open all ungrounded conductors simultaneously

Correct Answer:

Open all ungrounded conductors simultaneously

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