Marine Electrical Systems USCG Question #1096 (Set 37)

It is desired to add additional 120 VAC, 100 watt lighting fixtures in the accommodations, port side fed from circuit #1 (1L110) as illustrated in the lighting panel L110 of the illustration. According to 46 CFR 111.75-5, would be the maximum allowable additional lighting fixtures that could be installed? EL-0013

USCG Exam Illustration EL-0013
USCG Examination Diagram: Illustration EL-0013
Official USCG Answer & Rule Citation

Correct Answer: Option B — 2 fixtures

Lighting branch circuit capacity limits under 46 CFR 111.75-5 restrict total connected load based on protection rating, allowing a maximum of two additional 100-watt fixtures on the specified 120V accommodation circuit without exceeding safe ampacities.

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