Before beginning in earnest to replace a light switch, go first to the electrical panel and cut power to the room where you’re going to be working. To do this, first flip the switch on.

Do you know how to wire a light switch? How about a receptacle, aka outlet? If the answer is no, you should learn! It’s not ...

A light switch is the simplest of electrical devices. Flip the switch, electricity flows. Flip it again, electricity stops. Lights on, lights off. That’s great for a small room with one entrance.

When a switch is closed (on), it makes the circuit complete. Electricity can travel around the circuit. The doorbell on the right has been replaced in most homes by an electric bell that uses a ...