Engine Refrigeration (Supplementary) USCG Question #148 (Set 3)

The FIRST thing to do to ensure that a refrigeration unit will not start while undergoing repairs is to do what?

Official USCG Answer & Rule Citation

Correct Answer: Option D — secure and tag the electrical circuit

Under USCG National Maritime Center examination standards, the accepted correct answer is: secure and tag the electrical circuit.

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