USCG Exam PracticeSwitchboards and distribution systems
Under 46 CFR, what must each panelboard include to identify its circuits?
- A. A color-coded wiring diagram posted inside the panel door
- ✓ A circuit directory cardholder and a circuit directory listing circuit designation, load description, and overcurrent device ratingCorrect
- C. A one-line diagram showing all feeder breakers and their ratings
- D. A numbered bus bar schedule approved by the cognizant OCMI
Why B is correct
46 CFR §111.40-11(b) requires each panelboard to have a circuit directory cardholder and a circuit directory that includes 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