We just got a used hot tub. It ran fine where we purchased it but since we got it home, it has not run. We installed a new breaker for the hot tub and an GFCI outlet outside. The hot tub inself has a GFCI installed on it. If we plug it into the GFCI outlet it runs for a few seconds and either trips the circuit inside or the hot tub. Is it necessary to have a GFCI outlet outisde if the hot tub has one? We are thinking that this may be our problem..redundancy. Can we install a regular outlet outside instead of the GFCI outlet? When we plug it into a regular outlet it runs. We want to make sure that this is safe before proceeding.