USCG Exam PracticeElectrical basics — generators, motors, and safety
The maximum overcurrent device setting permitted to protect a shipboard generator is what percentage of the generator's full load rating?
- A. 100 percent
- B. 125 percent
- ✓ 115 percentCorrect
- D. 80 percent
Why C is correct
46 CFR §183.320(f) states that each generator must be protected by an overcurrent device set at a value not exceeding 115 percent of the generator full load rating. The 80 percent figure applies to derating, not overcurrent protection.
Cited:46 CFR §183.320