Marine Electrical Systems USCG Question #487 (Set 17)

As shown in the illustration, assuming power is available at the control circuit, which listed action will occur FIRST when the "off-run" switch is placed in the "run" position? Illustration EL-0017

USCG Exam Illustration EL-0017
USCG Examination Diagram: Illustration EL-0017
Official USCG Answer & Rule Citation

Correct Answer: Option C — The contactor coil "M" energizes.

Moving the control switch to run immediately completes the control logic loop, causing the main contactor coil 'M' to energize, subsequently pulling in the main power contacts to supply the motor.

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