Testing A Wall Light Switch

The tester light should not come on.

Testing a wall light switch.

This type of tester has two lead wires that uses the battery voltage of the tester to test a circuit which in this example is the circuit components of a switch. This video will show you how to check your light switch and how to replace a. How to troubleshoot light switches and replace it can be easy and d i y project. Once you ve confirmed that there s no electrical current in your switch you are ready to remove it.

Then flip the switch to the on position and touch both terminals with a probe from the tester. Your switch may be attached to a frame by screws which you ll need to take out or it may just be sitting up against the wall. The switch is good if the continuity tester lights. Testing any type of light switch takes a few basic tools.

Tools for testing light switches. You ll need screwdrivers usually one flat head and one phillips for removing the switch and disconnecting the switch wires. You also need a non contact voltage tester to check the switch and wires for power before touching them. Set the switch to the off position and touch both terminals on the side that held the wires.

A three way light switch allows you to control a light at two different places. The switch is composed of a hot wire and two traveler wires that are hooked into. And for making the test you ll need either a continuity tester or a. Pull the light switch from the wall.

This type will not work properly when used for a light switch. Testing a three way light switch. Test the ground wires in the wall switch with a two lead circuit tester which has a red and a black lead running into black body with a small light. A continuity tester can be used to test the light switch while the circuit is off or the switch has been removed.

Use extreme caution when performing this test it will only work when the power to the switch is turned on. They have two leads and a light the lights up when current is sensed.