USCG Exam PracticeElectrical troubleshooting and maintenance
46 CFR §111.05-23 requires ground indicators to be located at which positions on a vessel?
- A. At each branch circuit panelboard and at the emergency switchboard only
- ✓ At the ship's service generator distribution switchboard and at the propulsion switchboardCorrect
- C. At the main engine control console and at each motor controller rated above 5 hp
- D. At the emergency generator switchboard and at each transformer secondary terminal
Why B is correct
46 CFR §111.05-23(a) and (b) require ground indicators at the vessel's ship's service generator distribution switchboard for normal power, normal lighting, and emergency lighting systems, and at the propulsion switchboard for propulsion systems. Additional provisions apply to isolated feeder circuits per §111.05-23(d).
Cited:46 CFR §111.05-23