USCG Exam PracticeElectrical safety and general safety
Under 46 CFR §183.220, any enclosure containing more than one source of power must be fitted with which of the following?
- A. A ground fault circuit interrupter on each circuit
- B. A master disconnect switch rated for the total load
- ✓ A sign warning of multiple power sources and identifying circuits to be disconnectedCorrect
- D. A fused disconnect for each power source rated at 125% of full-load current
Why C is correct
46 CFR §183.220(e) specifically requires that any cabinet, panel, box, or enclosure containing more than one source of power be fitted with a sign warning persons of that condition and identifying the circuits to be disconnected. This is a labeling and warning requirement, not a switching or overcurrent requirement.
Cited:46 CFR §183.220