Turn off the power to the switch at the main circuit breaker or fuse panel. How to easily replace or change a light switch duration.
How To Replace A Light Switch Made Easy
How to change a light switch with the power on. Unscrew the switch from the electrical box and pull it out with the wires still attached. Replace a light switch best beginner step by step tutorial duration. To replace a light switch start by disconnecting the power to the switch by shutting off the breaker for the room. Unscrew and remove the switch plate. Then use a voltage tester to make sure that the circuit is dead. Now get the replacement light switch ready using its on off labels to help you orient the unit.
Then disconnect the wires from the screw connectors on either side. If necessary use a wire stripper to expose about a half inch of both the hot and neutral wires. To replace this kind of switch follow these steps. The power must be coming into the light switch box first and then continue on to the light fixture. Once the power is cut remove the switch cover and mounting screws with a screwdriver and pull the old switch from the wall. In other words if the hot line that provides power to the light or whatever the switch powers goes into the light fixture first and then into the light switch box you wont be able to use a switchoutlet combo.