Marine Electrical Systems USCG Question #313 (Set 11)

As shown in figure "B" of the illustration, with respect to the common equipment grounding conductor, what statement is true? Illustration EL-0125

USCG Exam Illustration EL-0125
USCG Examination Diagram: Illustration EL-0125
Official USCG Answer & Rule Citation

Correct Answer: Option B — The common equipment grounding conductor is solidly-grounded at the source and this is the least common arrangement onboard merchant vessels.

IEEE 45 and 46 CFR Subchapter J establish that solidly grounding the common equipment grounding conductor at the source is standard practice, ensuring fault current paths operate protective devices effectively.

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