How To Test A Wall Light Switch

With the power off remove the two screws that hold the cover plate on.

How to test a wall light switch.

After that loosen the screws that hold the switch into the electrical box. Testing a switch with a continuity tester. Disconnect and remove the switch. How to troubleshoot light switches and replace it can be easy and d i y project.

Touch the probes to the copper terminals on the side of the switch. Remove the switch cover plate by unscrewing its two small screws to test whether it is safe to proceed to replace or rewire a wall switch. A continuity tester can be used to test the light switch while the circuit is off or the switch has been removed. These are the screws that attach your switch to the wiring in the wall.

You will need to take them completely out of the box to free up the switch. This video will show you how to check your light switch and how to replace a. The most common methods for testing a light switch. Testing your switch with a continuity tester 1 locate the terminal screws on the light switch.

This indicates that electrical continuity exists through the switch. Identify the switch type. According to the university of washington you should see a reading of less than 25 ohms. You should shut the power off before you remove the cover plate on the light switch.

2 hold the tester within inch of the screw terminals. Turn the switch on.