USCG Exam PracticeElectrical basics — generators, motors, and safety
Under 46 CFR §111.50-1, overcurrent protection for motors, motor circuits, and controllers aboard inspected vessels must conform to which subpart?
- A. Subpart 111.12
- B. Subpart 111.20
- ✓ Subpart 111.70Correct
- D. Subpart 111.77
Why C is correct
46 CFR §111.50-1(c) specifies that overcurrent protection for motors, motor circuits, and controllers must meet subpart 111.70. Subpart 111.12 applies to generators, 111.20 to transformers, and 111.77 to appliances. Note also that per 46 CFR §111.25-1, the generator requirements of §111.12-5 apply to motors as a general matter, but the specific overcurrent protection subpart for motor circuits is 111.70.