I guess I was hoping for a simple solution to fix the over heating problem. I am going to run the pump until the new one arrives. I set the tripper pins on the timer to run early morning for 2 hours, late afternoon 1/2 hour, and for 2 hours at midnight. I go swimming in the late afternoon so I can shut the pump off if it gets too hot. The other tripper pins are set to run during the coolest periods. I hope the new pump runs as quiet as the Whisperflo. I may have a licensed pool technician check the wiring and the rest of the system. I have to review my options and decide the best way to go. Thank you for your assistance. If any forum subscribers have had the same problem of overheating that was not due to issues with the main breaker or GFCI, it would be interesting to see what was done to identify and fix the problem.