How To Test Which Wire Is Which. If the wire is coming from the top of the switch box it is likely your load wire. Load Wire - Generally connected to the top half of your switch.
If the wire is coming from the top of the switch box it is likely your load wire. Before you take the more advanced stop of opening an electrical box try checking it with a receptacle testerIf its a plug outlet the easiest and. Connect the negative end of the multimeter probe to the center wirepin at one side of the coax.
Use the fixed anvil of the micrometer to hold them in place.
You will get a reading if one wire is hot and the other isnt. Line Wire - Generally connected to the bottom half of your switch. Manual testing of the live wire without having the meter device. Always turn off your breaker at the main panel before opening any electrical box in your homenever work on a live wire in any circumstance.
