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AllMyFault 03-20-2005 12:45 PM

installing 3-way switches
In our basement we're finishing, the living area has 2 lights on a 15 amp circuit and are the only things on the circuit. There's 14-2w/g going from the panel to the light switch (which is on the opposite side of the room.) I want to replace it with a 3-way and put a 3-way swicth at the entrance of the room. My first question is: Since it's a 15 amp circuit 14 gauge wire can I use 12 gauge (because I have some already) to continue the wiring for the new switch or change it all to 12gauge? 2nd, do I still use 2 wire w/g? And how do I wire these switches?

jbfan 03-20-2005 03:54 PM

You need 14/3 or 12/3 w groound to complete this job. Leave the power where it enters your current switch, tak a peice of 14/3 and run it to your new switch location, wire the switch with the white wire on the common screw, remark it with a peice of black tape, at you current switch, takt the black on the power in, tie it to the common screw on your 3 way switch. tie the white wire from your 3 wire to the black wire going to your light and hook the black and red leftover to either of the remaining screws on both 3 way switchs. Make sure you turn of the breaker first. If you have anymore questions, just ask

AllMyFault 03-20-2005 10:17 PM

I understand, thank you, but which is the "common" screw on the 3-way switch?

ryaniniowa 03-20-2005 10:20 PM

on most there are 2 at the top across from each other and one at the bottom. It's the one by itself on the bottom. usually it's a different color also.

AllMyFault 03-20-2005 10:34 PM


Originally Posted by ryaniniowa
on most there are 2 at the top and one at the bottom. It's the one by itself. usually it's a different color also.

Thanks I'll work on it tomorrow and let you guys know.

lesley buck 04-06-2005 11:42 AM

reducing light switches from 2 to a single switch only

jbfan 04-06-2005 12:54 PM

is that a question?

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