Last weekend we ran 4 #4 wires to power a pony box for my new Hot tub. The distance to the new box is 40' from the 200 amp service which feeds the house. We wired it exactly like we wired the house. We have power to the pony box. Here is the problem when we powered the tub the GFCI breaker breaks as soon as it it powered up.
The manufacture of the tub says the GFCI is wired wrong.
Could someone tell me what could be wrong. We grounded everything as you would any other breaker.
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