USCG Exam PracticeSwitchboards and distribution systems
A panelboard on a vessel subject to 46 CFR inspection is missing its circuit directory. Which regulation is violated, and what information is specifically required in that directory?
- A. 46 CFR §111.95-3; the directory must list NEMA protection ratings for each circuit
- ✓ 46 CFR §111.40-11; the directory must list circuit designation, load description, and overcurrent device rating or setting for each circuitCorrect
- C. 46 CFR §183.330; the directory must list bus voltage and continuous current rating for each circuit
- D. 46 CFR §111.30-29; the directory must list the emergency load designation and transfer switch position for each circuit
Why B is correct
46 CFR §111.40-11(b) requires each panelboard to have a circuit directory cardholder and a circuit directory containing the circuit designation, a description of the load, and the rating or setting of the overcurrent protective device for each circuit.
Cited:46 CFR §111.40-11