Author Topic: Faulty mains main breaker  (Read 1251 times)

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Offline mmagin

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Re: Faulty mains main breaker
« Reply #25 on: December 18, 2017, 11:26:04 am »
Lessons: yes, faulty old breakers can trip too easily.  Also, multi-pole "handle-tie" breakers suck.

I don't understand, you mean that a one-side overload tripped both sides (or all 3) of the upstream breaker?  That is by design.

No, only one pole tripped, despite the handle-tie, leaving one side of the split phase live :)

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