The black (hot) wire goes to the brass screw or into the hole in the back of the device on the same side as the brass screw. This wire is sometimes red. The green or bare copper (ground) wire, if the device has one, attaches to the green screw terminal on the switch or to the electrical box.

Which screw is hot on a single pole switch?

A single-pole switch has two brass terminal screws on the side that receive the black (“hot”) wires of the circuit. One black wire comes from the power source and the other goes to the light(s).

What screw is the hot wire connected to?

Basic Wire Color-Coding A black or red-hot wire usually connects to a brass-colored screw terminal or black wire lead on electrical devices. A white neutral wire usually connects to a silver-colored terminal or white wire lead.

Where does the hot wire go on a single pole switch?

The black (hot) wire goes to the brass screw or into the hole in the back of the device on the same side as the brass screw. This wire is sometimes red. The green or bare copper (ground) wire, if the device has one, attaches to the green screw terminal on the switch or to the electrical box.

What if there are two black wires?

You will get a reading if one wire is hot and the other isnt. However, if both wires are hot, the reading will be zero. However, if you need to rewire a light switch or a plug socket, you may occasionally come across two black wires. Its essential that you determine which black wire is hot before proceeding.