I have a old barn and the main wires from the meter to the fuse box are 2 black and a red. now I know on a new system there would be a black wire a black with a white strip and a black with a red strip and I know the white striped one is the neutral. but with the old wiring what wire is the neutral the red wire? that is the only one I can think of. i just wanted to no to solve a argument lol