EdF

I have 220 volt well pump that I have had problem with. I understand the black and white wire each carry 110 volts and the copper is ground wire. I discovered the copper ground wire was twisted together and was arching so I fixed the wire with conectors. I found when I disconnected the wires in the well house they checked out okay from the well house to the pump with ohm meter. But when I reconnected them and turned the power on at the breaker it did not matter if the switch to turn on the pump was on or off the pump ran till it got right pressue and shut off. Any ideas how to find the problem or what it is??