USCG Exam PracticeElectrical troubleshooting and maintenance
A circuit breaker trips repeatedly on the same feeder circuit. What is the correct immediate action for the electrician?
- A. Replace the breaker with one rated for a higher continuous current
- ✓ Investigate the cause of the trip before resetting the breakerCorrect
- C. Reset the breaker and monitor the circuit for 30 minutes
- D. Bypass the breaker temporarily to restore power to the load
Why B is correct
NEETS Mod. 3 §2-2 states that after a trip the cause must be investigated before resetting, and that repeatedly resetting into a fault is dangerous. A breaker that trips repeatedly signals a genuine fault or overload and must not simply be reset back into the fault.
Cited:NEETS Mod. 3 §2-2