Marine Electrical Systems USCG Question #1011 (Set 34)

If overloading an electric motor becomes necessary in an emergency situation, what should be done to prevent damage to the motor while allowing sustained operation?

Official USCG Answer & Rule Citation

Correct Answer: Option D — cool the motor with portable blowers and fans

When operational emergencies necessitate overriding standard motor protection limits, IEEE 45 maintenance guidelines advise deploying external portable blowers and auxiliary fans to force convective cooling airflow across the frame, preventing catastrophic winding insulation breakdown without disabling vital electrical protective devices.

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