As shown in the illustrated devices and symbols, which of the symbols represents a standard normally closed relay contact? EL-0005
Official USCG Answer & Rule Citation
Correct Answer: Option A — F
Symbol F represents a standard normally closed (NC) relay contact, depicted by parallel lines intersected by a diagonal slash. Correctly identifying these symbols is vital for interpreting marine control schematics and troubleshooting automation systems under 46 CFR Subchapter J.
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