I've got a customer that is getting transient voltage to his well pump. He is getting 7-9 volts from pump ground to the ground coming into the pump. The pump doesn't want anything over 1.5v. This burned up their last pump over a year. They are trying to figure this out. I spoke to the pump installer who seems pretty knowledgeable.
They called the power company who came out and checked the voltage and said it was fine on their side. The technician turned off individual breakers and the main breaker without any change. I am going over there tomorrow to look at it. What is the best thing to check. Do I need to disconnect the neutral comming into the panel and check voltage from there to the panel? Any help would be appreciated.
