Anyone have a good resource to use to test wires and see which is the hot (black) and which is the neutral (white)? I am replacing some fixtures in an old house where both wires are black in the boxes. I want to test to make sure that I do it right because im not sure the previous owner did. I’ve googled for the answer but not getting what I need. Thanks ! via /r/DIY https://ift.tt/2K5my2I
