Marine Electrical Systems USCG Q#555 (Set 19)

What statement is true concerning the electrical diagram shown in figure "B" of the illustration? EL-0019

USCG Exam Illustration EL-0019
USCG Examination Diagram: Illustration EL-0019
Official USCG Answer & Rule Citation

Correct Answer: Option C — 'R1', 'R2', and 'R3' are connected in parallel.

Components connected across common supply buses share identical voltage nodes, identifying them as parallel-connected elements. In marine distribution systems per 46 CFR Subchapter J, lighting and receptacle loads are universally wired in parallel.

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