Question 107Electricity & Electronics - 1st Asst/Chief

70% to pass

Upon failure of the normal power supply, how is the emergency generator placed on the line to feed power to the emergency bus?

Amain bus tie feeder
Bpower failure alarm bus
Cautomatic bus transfer device
Dline connection feeder
AI Explanation

The correct answer is C) automatic bus transfer device. When the normal power supply fails, the automatic bus transfer device will automatically switch the emergency bus to the emergency generator, allowing it to feed power to the emergency systems. This is done automatically without any manual intervention, ensuring a seamless transition to the backup power source. The other options are incorrect because: A) the main bus tie feeder is not responsible for connecting the emergency generator, B) the power failure alarm bus is not involved in the actual power transfer, and D) the line connection feeder is not the mechanism that switches the bus to the emergency generator.

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Official Resources
46 CFR Electrical Engineering 46 CFR Machinery & Electrical USCG National Maritime Center
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