Testing A Wall Light Switch

Test the switch with a continuity tester.

Testing a wall light switch.

The switch is composed of a hot wire and two traveler wires that are hooked into. Tools for testing light switches. You also need a non contact voltage tester to check the switch and wires for power before touching them. They have two leads and a light the lights up when current is sensed.

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. Testing any type of light switch takes a few basic tools. Testing a three way light switch. The switch is good if the continuity tester lights.

You ll need screwdrivers usually one flat head and one phillips for removing the switch and disconnecting the switch wires. The tester light should not come on. Pull the light switch from the wall. The problem is that the light in the tester acts as a bridge for the circuit when the switch is off.

And for making the test you ll need either a continuity tester or a. Use extreme caution when performing this test it will only work when the power to the switch is turned on. This video will show you how to check your light switch and how to replace a. A continuity tester can be used to test the light switch while the circuit is off or the switch has been removed.

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. A three way light switch allows you to control a light at two different places. Keep the circuit breaker flipped off for this.

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. Set the switch to the off position and touch both terminals on the side that held the wires.