There should be continuity between the. Connect these wires to the switch 1 wire on each of the brass colored screws.
How To Wire A 3 Way Light Switch With Pictures Wikihow
How to test a 3 way switch. The meter should display 1 ohm or less meaning the switch is on. Flip the switch toggle one way and then the other. Put one lead on the box or ground wires and the other lead on one of the gold screws. Remove the two 3 way. Connect the red lead to one of the terminals on the switch. Connect the black lead to the other terminal on the switch.
You can only test the switch safely when there is no electrical power present. Test a 3 way switch turn off power to the switches at the circuit breaker and using a tester make sure power is off. This story features diagrams that show how to wire 3 way switches. Using a continuity tester check continuity between the common black terminal and each of the traveler terminals. The wiring is more complicated than a traditional single pole switch but well explain how to make the connections. To test a 3 way switch connect one meter probe to the common terminal and the other to one of the travelers.
Put the switch into the on position. Testing a three way light switch check the bulb and the breaker. Turn off the breaker. Check the bulb to make sure it is not burned out. Wiring a 3 way light switch is certainly more. Make sure the breaker supplying the.
We are going to test the other two screws. Use a continuity tester or multimeter on the ohms setting to determine if its conducting electricity properly. The third wire is the common wire that feeds the light fixture and is connected to the black screw on the switch. These are the runners of the circuit. Once youre done youll be able to control a light from two switches. You are at the power side of the three way switch.
To test it without removing from the circuit the voltage function would be needed with the power on then you would look for 120 across the contacts when the switch is in the off position or in the case of a 3 way the hot will swap from one side to the other. Touch the probes to the 3 wires removed from the switch until you get a reading on the tester indicating continuity. Testing the switch in circuit with a continuity tester will show the connected loads. You should have power on this screw when the switch is in one position and not have power when the switch is in the other position.
Gallery of How To Test A 3 Way Switch
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