If deck machinery is expected to be idle for an extended period of time, what should be done?

Correct Answer: Option C — energize space heaters to prevent the condensation of moisture

Idle electric motors exposed to marine humidity accumulate destructive internal condensation as ambient temperatures fluctuate. Energizing internal frame space heaters maintains winding temperatures slightly above ambient dew point, preserving critical megger insulation resistance values and preventing ground faults during subsequent startups.