How Are US Houses Wired?
There are a few ways to determine US houses which wire is the live wire and the neutral wire. One way is to look at the schematic for the electrical circuit. The letter “L” will always be connected to the live wire, while “N” will always be connected to the neutral wire.
Another way to determine which wire is by looking at the wiring itself. The live wire will usually be red or black, while the neutral wire will be white or green wire.