Quote:
Originally Posted by greglepore
I suspect one side of the contactor to the pump is shot...
If it was running without an on command, something in the contactor failed allowing it to close, or in the control panel.
Why you don't see continuity to ground on one side of the circuit is beyond my feeble knowledge.
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I don't think you're feeble. That's a mystery and a dangerous one. I suspect the answer will become apparent when the dropped leg is fixed. Then no more mystery.
A continuity check on the whole system is in order. Fortunately radio type testers are pretty cheap now. IDK how far the run is but if there is some scrap wire of any nature available that will reach (even some lengths tied together) the system can be checked with the aforementioned meter. Hopefully it's in one panel or the other.
However, I suspect it's not.
What kind of pump motor is this? Brand and model please.