Mark G Posted March 2, 2021 Report Share Posted March 2, 2021 I have a Master Spas Legend Series hot tub (20 years old) that I bought used and have set it up in my garage to troubleshoot and fix a few issues prior to moving it to a permanent location. I had it wired to a 50A 230v breaker without a GFCI just for test purposes. I fixed a few leaks and replaced the bad recirculation pump. Since it appeared to be good to go, I wired through a 50A GFCI breaker (230v) and it will trip the GFCI immediately upon turning the breaker on. I have isolated the problem to only occur when the recirc pump is plugged in. If I unplug the pump from the output of the main control board, the GFCI will hold. I have removed the pump (115v) and tested the line and the neutral to ground and I have no OHM's across either leg. I have also removed the two line inputs to the 230v heater and the GFCI still trips. Any thoughts? Thanks in advance. Mark Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted March 2, 2021 Report Share Posted March 2, 2021 Please post photos of the circuit board and the schematic on the inside cover if there is one. Need to see how the board and in particular how the circ pump is wired Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted March 2, 2021 Report Share Posted March 2, 2021 The neutral (white) wire from the spa must go to the neutral terminal on the breaker, not the neutral bar in the panel. The "pigtail" from the breaker goes to the neutral bar. 1 1 Quote Link to comment Share on other sites More sharing options...
jimmythegreek Posted March 2, 2021 Report Share Posted March 2, 2021 Rdspaguy has it right. The reason is the 230v side doeant need or have a nuetral, the 110v circ pump does and without the pigtail to the nuetral bar it will trip instantly 1 1 Quote Link to comment Share on other sites More sharing options...
Mark G Posted March 2, 2021 Author Report Share Posted March 2, 2021 Bingo -- Thanks RDspaguy and and the backup by jimmythegreek, this was a different looking GFCI that what I have used in the past and I missed the neutral on the breaker. I did have both breaker neutral and load neutral on the bar. THANKS AGAIN! 1 Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted March 3, 2021 Report Share Posted March 3, 2021 @RDspaguy Please return at end of week. Good Job 1 Quote Link to comment Share on other sites More sharing options...
jimmythegreek Posted March 4, 2021 Report Share Posted March 4, 2021 For anyone reading this in future, some 2 pole 240v breakers have just nuetral lugs and no pigtail like 120v breakers Nice award RDspaguy! Quote Link to comment Share on other sites More sharing options...
cranbiz Posted March 4, 2021 Report Share Posted March 4, 2021 Been lurking for awhile but had to respond here. My 2 pole 240V GFCI has both a neutral lug and a pigtail for the neutral bus bar. Seimans QF 50A breaker. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted March 4, 2021 Report Share Posted March 4, 2021 Yes, every gfci breaker has both a neutral lug and pigtail. Quote Link to comment Share on other sites More sharing options...
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