274. As shown in figure «A» of the illustration, with respect to the common equipment grounding conductor, what statement is true

274. As shown in figure "A" of the illustration, with respect to the common equipment grounding conductor, what statement is true

The common equipment grounding conductor is solidly grounded at the source and this is the most common arrangement onboard merchant vessels.
The common equipment grounding conductor is solidly grounded at the source and this is the least common arrangement onboard merchant vessels.
The common equipment grounding conductor is insulated from the source and this is the least common arrangement onboard merchant vessels.
The common equipment grounding conductor is insulated from the source and this is the most common arrangement onboard merchant vessels.

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