I have a outlet that is 240V with 4 wires. I want to change it to 3 wires, I am assuming the black is also a hot wire. With the volt meter I get 220V touching the two red wires and 110V when i touch the black to ground.
I want to change the plug to a 3 wire and I am not sure what to do with the black wire, can i just put a wire nut on it and push in the box?? Any help would greatly be appreciated. I don't need another shocking experience