Main Circuit Breaker Keeps Tripping

We have a circuit breaker that all of a sudden keeps tripping. The breaker box goes directly to the power pole and the only thing on the problem circuit breaker is the pump for our well. We've had this pump on this breaker for 15 years and just started having a problem in the last few days. We already tried replacing the circuit breaker. We replaced it with a 15 amp breaker because that's what was in there before. That did nothing. Can anyone help please?

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By Tim A

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April 20, 20150 found this helpful
Best Answer

The breaker is tripping from overcurrent. If it trips immediately, it is most likely a short to ground. It could also be a locked rotor on your pump.

If it takes time to trip, it is an overcurrent, and for some reason the pump is working harder than it used to. Maybe buildup within the pump or bearing failure.

Look for physical damage of the cable feeding the pump from the breaker.

If none is found, have an electrician megger the leads to the motor to see if you have a short to ground.
If you do not, you may need to have someone pull the pump and have the motor tested and/or replaced. If it has been the same pump for 15 years, it may be at the end of its life.

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