Question about Electrical Supplies
Karen, You can do a little testing or just do trial-and-error. (without reading further you might think there are 6 possible combinations, but there are only 3, so read on.) I am assuming that this is a 3-way switch and that in addition to the 3 red wires you also have 2 wires that are connected together (probably white) and a ground wire. I would also assume that the switch only has three terminals besides the ground lug. Going on those assumptions, plus the assumption that you don't want to buy a non-contact voltage tester (about $15, and wonderful to have), here's what you can do--- Two of the wires are travelers (T1, T2) and they are interchangeable. The third wire is the incoming or outgoing power wire (P). If the switch is mounted in a vertical position with two terminals at the top and one terminal at the bottom, P goes to the bottom terminal. T1 and T2 go to the top terminals. It will take up to 3 tries to get the P wire connected to the bottom terminal. It won't hurt anything if you get it wrong (it just won't work right) so just try a combination, turn on the power, and test for normal operation of the two 3-way switches. I hope you found this helpful. Good luck, Al K
Posted on Aug 24, 2010
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Posted on Jan 02, 2017
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