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Hi all:
New here, I bought a house last July with a coleman spa, no manual, so not sure of model #. Its a 240 V, 40 amp, electric heater system , kocated outside here in NY.
The previous owner had the tub installed approx 5 yrs ago. The problem is over the summer the breaker GFCI would trip maybe once a month. Then recently, every week, the the last two days it wont stay on it keeps tripping.
Here is what I did:
Replaced with a standard 50 amp double breaker and measure current on each leg, with lights, pumps and heater running I get 12.5 amps on each leg.
I opened the control box under the spa, 6 awg wire run directly from house panel to spa panel which is approx. 12 feet. Checked connection inside, spray WD-40 on connection. Same problem.
In my panel box the main untility line incomming consist of the 2 hot and a bare heay guage wire, neutral I assume, and then a separate ground is ran from outsde to the panel. Ground and neutral from untility are connected together in the house panel.
At the spa panel end the neutral is connected to the ground bar and a ground spike is then connected to the spa ground as well.
This setup has been working for 5 yrs untill recently. I even replaced the 50 AMP GFCI breaker and same problem. The pig tail from the GFCI is connected to the ground/neutral bar currently.
Please help, cant fugure what may be the problem.
Thanks,
Neil
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