When you turn on a switch, a fuse blows or a circuit breaker trips, the switch is most likely to fault and should be replaced. There are many different types of switches, but the most of them have very similar replacement methods. You may choose to replace the faulty switch with a new type, such as a mercury (silent) switch. Click now Hamilton Electrician Association
Before you start working, make sure the power is turned off. Remove the fuse or trip the circuit breaker that serves that circuit. Remove the two screws that hold the cover plate in place and take it off. Pull out the switch by removing the mounting screws that hold it to the wall box.
Take careful notice of the switch’s wiring. It will be determined by the location of the switch in relation to the remainder of the circuit. Because the wiring for a three-way switch (which allows you to operate a fixture from two different locations) is more complicated, ensure sure the new switch is wired the same way as the damaged one. Transfer one wire at a time from the old to the new if space allows, so you get it correct the first time. If you don’t have enough room, use masking tape and a pen to identify the wires so you can remember which one is which.
Remove the wires from the malfunctioning switch by loosening the terminal screws. Place the loops around the replacement switch’s screws in such a way that they will tighten as the screws are tightened. Squeeze the loops closed around the screws with needle nose pliers. Tighten the screws all the way. Install the switch in the wall box and secure it with screws. Remove the cover plate and replace it. Replace the fuse or turn on the circuit breaker to restore electricity to the circuit, then check the switch’s function.
Back wired switches are also available, and they can be used to replace most standard switches. The procedure for installing back wired outlets is essentially the same.