Marine Electrical Systems USCG Question #436 (Set 15)

Before touching a small capacitor connected to a de-energized circuit, or even one that is completely disconnected, you should do what FIRST?

Official USCG Answer & Rule Citation

Correct Answer: Option B — short circuit the terminals to make sure that the capacitor is discharged

Capacitors can retain dangerous electrical charges long after power is removed. Standard marine safety protocols under 46 CFR Subchapter J require discharging capacitors by shorting their terminals before handling to prevent electrical shock or arc flash hazards.

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