By what means is a diesel driven emergency generator prevented from being paralleled with the ship's service generators?
Official USCG Answer & Rule Citation
Correct Answer: Option C — an electrical interlock system
Title 46 CFR Subchapter J mandates that emergency generators be completely isolated from the ship's service switchboard bus during normal operations. An electrical interlock system physically or logically prevents simultaneous closure of breaker sets, precluding dangerous feedback and accidental paralleling with the main generators.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.