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Similarly, you may ask, what causes a breaker to trip and not reset?
Unplug all appliances that are plugged into outletsonthat circuit and turn off all the lights, then trythebreaker again. If it stays on, plug the appliances backinone by one until it trips again, and service or discardtheappliance that makes it trip. Check each applianceforoverheating when you unplug it.
Additionally, what happens if a circuit breaker doesn't trip?
If the circuit breaker won't reset,andtrips instantly, then you probably have a short inthecircuit. This is a more complicated and serious reasonfor abreaker tripping because it can result in anexcessiveelectric current that can potentially cause circuitdamage,overheating, fire or even explosion.
The Lifespan of a Circuit Breaker The Consumer Product Safety Commission (CPSC)estimatesthe life expectancy of a circuit breaker to bearound 30 to40 years, and it's the same for the GFCI, AFCI, andstandardbreakers.