I've had the same pump/GFCI breaker and wiring for 15 years now. Pump motor was rebuilt 2 years ago.
The pool is in-ground, 16x32, pump is 240volt protected by GFCI breaker at the panel, dedicated circuit. Wall-mounted outside by the pump is a power shutoff and a motor control switch to start/stop the pump. All equipment is open-air, but rated as such.
Pump has worked fine all season (past 3 months). We had heavy rain on Wed afternoon, I had the pump turned off at the time. After the rain stopped I went out to switch on the pump. Started fine, but a few mins later it was off. Now it will not start, as the GFI breaker trips immediately.
What I have done so far;
- replace the outdoor switch
- replace the GFCI breaker
- bypass the power shutoff box
- took the pump apart and had a tech check it out. Works fine, started up (mind you it's a dual voltage pump 120/240 he used 120)
What the heck else can I test/check? My pool is starting to turn on me, it's a long weekend and can't find an electrician.