I had to redo a wiring job from the previous owner. I wired everything up right. I then turn on the breaker and check an outlet and get a hot ground reverse on my tester. I think the problem is there connection to the power supply, which is not a breaker, but a plug into a wall outlet. I am thinking the 2 wires are reversed on the plug that gets plugged in. Would I be right that it would be a simple fix by rewiring the plug?