Posted by buickanddeere on December 18, 2008 at 21:59:15 from (216.183.133.117):
In Reply to: Re: pump trips breaker posted by showcrop on December 18, 2008 at 19:45:55:
As Henry said. If that is really a 240v pump. Both the white and black have 120 to neutral on them. And 240V between the white and black wires. The bare copper should be connected to the switch's metal frame/body. Time to megger the pump motor and find out if it's shorted to ground. Then use an ohm meter to check for shorted windings. A high voltage surge or spike while lines fell on each other may have damaged the motor. Odds are the pump will have to come up. New pumps have a simpler/more reliable three phase motor down the well. And a variable speed drive that converts your hydro service's single phase to three phase at the top of the well for the motor.
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