Tripping Circuit Breaker

[j.sheridan@joyceelectrica]

Has anyone had an issue with a single bay randomly tripping the power circuit breaker? All wiring has been replaced, breaker has been replaced, motor has been replaced. Any help/info would be great.

Thanks!

 

[Eric H]

3 phase? You may be losing a leg (phase)
Tighten all of the lugs on the motor starter and breaker.
I had 1 dryer motor that would drop a phase about once a year. I had it on my PM list to tighten all the lugs once every 6 months. If I forgot to do it I’d have an issue. I eventually replaced the motor contractor and haven’t had an issue since

 

[Blanco]

Swap the contactor and overload from another bay and see if the problem follows

 

[j.sheridan@joyceelectrica]

3 phase? You may be losing a leg (phase)
Tighten all of the lugs on the motor starter and breaker.
I had 1 dryer motor that would drop a phase about once a year. I had it on my PM list to tighten all the lugs once every 6 months. If I forgot to do it I’d have an issue. I eventually replaced the motor contractor and haven’t had an issue since

We have replaced the contactor already, all terms are torqued.

 

[j.sheridan@joyceelectrica]

Everything on the power side has been replaced.