Can someone tell me how to troubleshoot this problem.
I have a switch at the end of a circuit that operates my pool pump and its 15 feet away from a 3 prong receptacle that feeds the to the switch. At the end of the pool season I disconnect the pool pump from the switch and I use electrical tape to insulate each individual wire.
Now here's my problem. The 3 prong outlet (that feeds power to the switch that controls the pool pump) is use during the winter months to operate a 3 prong winter pool cover pump with a GFI plug.
This pump has worked for the last 2 months now suddenly its tripping the pool cover pump GFI.
I used a receptacle tester that identifies wiring errors and it says the receptacle is wired correctly. I then plugged a radio in the outlet and it worked but when I plug the 3 prong pump in the GFI on the plug will trip.
Not knowing if the receptacle was defective or damaged I decided to replace it with a new one but the pool cover pump GFI plug still trips.
Does anyone have any suggestions on how to trouble shoot or fix the problem? Thank you, Dan