I know this isn't fishing related but I have gotten good feedback on this site for many issues in the past and hope you can help me. I bought a used hot tub recently that requires two seperate ground fault circuits. Every time it rains, one of the two circuits either trips the breaker or causes the breaker to fail completely. The larger break which is a 240 volt, 30 amp two pole breaker does not trip. The 120 volt, 20 amp, single pole, is the one that continues to fail. The panel and breakers have all been Square D Homeline series. The only thing I can find different is the electrician has been using a dual function CAFI/GFI for the 120v, 20 amp breaker while the 240 volt, 30 amp breaker is GFI only. Could this possibly be the problem? If not, What should we be looking for? We have measured the current draw on the 20 amp breaker numerous times and with everything running it is a constant 16 amps. I also suspect strongly that the problem is water related because it only trips when raining and the hot tub has not been in use when it trips. The pump only pulls about .5 amps when the jets are off so I dont think it is tripping due to over current...
My electrician wants to try a different GFI only breaker and has it on order. I am concerned it may be something else... Any thoughts would be appreciated.