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I'm saying that because... greggle is saying that his wiring schematic calls for 2 hots, 1 return and 1 earth ground at the main breaker panel. I'm assuming he's following his wiring diagram for his particular tub. (Read his first post again)I don't own his brand tub. I have a Hot Springs and that's the way mine is wired also.He can correct me if I'm wrong... but I'm just going by what he says.