USCG Exam PracticeElectrical safety and general safety
According to 46 CFR §183.220, an electrical enclosure that contains more than one source of power must be fitted with which of the following?
- A. A ground fault circuit interrupter on each circuit
- ✓ A sign warning of multiple power sources and identifying the circuits to be disconnectedCorrect
- C. A separate watertight cover for each power source
- D. An intrinsically safe isolation switch rated for the total combined load
Why B is correct
46 CFR §183.220(e) requires that any cabinet, panel, box, or other enclosure containing more than one source of power be fitted with a sign warning persons of this condition and identifying the circuits to be disconnected. This is a personnel safety measure to prevent inadvertent energization during maintenance.
Cited:46 CFR §183.220