Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG Marine Electrical Systems (Set 47)

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Why should an electrical worker determine the nominal voltage of a circuit first before making contact with the circuit?

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6 MCQs

#1 Why should an electrical worker determine the nominal voltage of a circuit first before making contact with the circuit? #2 When taking voltage measurements, for reasons of electrical safety, what should be the proper sequence of actions? #3 When performing an absence-of-voltage test before commencing repair work, at the minimum where must the absence-of-voltage test be performed? #4 When performing an absence-of-voltage test, a live-dead-live test may be required in conjunction with the absence-of-voltage test. What is the purpose of the live-dead-live test? #5 What statement is true concerning temporary protective grounds used to establish an equipotential zone for the purposes of eliminating the electric shock hazard? #6 What is the minimum threshold voltage which requires electrical workers to be insulated from energized conductors or circuit parts by wearing the appropriate PPE while working in open enclosures?

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