According to 46 CFR, Subchapter J (Electrical Engineering) regulations, what is the minimum conductor size associated with a 25 or 30 ampere lighting branch circuit supplying a non- switched cargo hold light fixture?

Correct Answer: Option A — 10 gauge

Per 46 CFR Subchapter J wiring tables, high-capacity branch circuits rated at 25 or 30 amperes supplying heavy service equipment like non-switched cargo hold lights require a minimum conductor size of 10 AWG.