How to Replace a Light Switch
They say it only takes one idiot to change a light bulb, but to change a light switch requires the skill and carefulness of a handyman. If you have a malfunctioning or a worn out light switch at home, here’s a simple way how to replace it.
What You’ll Need:
Circuit tester
Screw driver
New light switch
Marking pen and masking tape
Electrical tape
Procedure:
Before you proceed with installing the new switch, you have to turn off the power supply first, to avoid electrocuting yourself during the process. Go to the fuse box or turn off the power to the circuit feeding the switch. You can do this by either removing the fuse or just turning the circuit breaker off.
Test if the power is really off, by flipping the switch. To make sure no one accidentally switches the power back on while you’re at work, make a note using masking tape and a marker, and tape it to the power supply.
Using a screwdriver (opt for a multi-head screwdriver to make the task easier), remove the screws that hold the cover plate. This is the metal or plastic that covers the switch. Remove the cover plate and its screws, then proceed to removing the mounting screws that are holding the switch in place.
Remove the screws that hold the switch in place inside the electrical box completely, then pull out the old switch. Be very careful, so you won’t crack or do any damage to the wiring. When the switch is completely out, check the wiring’s conditions.
Extend the switch out, so you can access the black wires connected to the old switch. Remember, switches are always connected to black (hot) wires. Sometimes, you’ll see a white wire with a black taped end, meaning this is a hot wire. If you see a white wire connected to the switch, it means the electrician has not properly marked the wire as black. After you disconnect it, wrap the end with black electrical tape.
If you see neutral white wires or ground (bare copper or green wires) don’t do anything about them.
Get the new switch. Connect its two brass terminals to the black wires you spotted earlier. Push it gently back in the box, making sure you don’t damage or cut any of the wires.
Using the new screws that came with the new switch, fasten the switch to the electrical box again. Then, attach the switch cover plate.
Turn the power back on, and see if it works.
Turning the lights on and off doesn’t have to be a hassle. Just remember these steps and switching a new switch will be easy.