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Old 06-22-2011, 08:12 AM   #1
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Wiring 3 ways switches (2)


My contractor wired a room downstairs for us but didn't install the switches at the time. I thought I could do this myself. I attempted to do so several times without success. Here is the way he wired the lights and boxes. He has 3 wire romex going from 1st switch box to second switch box, but also has 3 wire romex going from 1st box to light fixture.

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Old 06-22-2011, 08:23 AM   #2
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Wiring 3 ways switches (2)


A. What other wires are in the switch box with the two 3-wires?

B. What other wires are in the ceiling fixture box?

C. What other wires are in the switch box with the lone 3-wire?

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Last edited by brric; 06-22-2011 at 08:25 AM.
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Old 06-22-2011, 09:14 AM   #3
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Wiring 3 ways switches (2)


THe 3 wire cable between the switches is sufficient and proper (2008 code). The 3 wire cable between the switch and the light is okay.

Where does the power feed come in?

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Here is the way he wired the lights
Post a diagram.
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Old 06-22-2011, 01:36 PM   #4
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Wiring 3 ways switches (2)


[
quote=brric;671899]A. What other wires are in the switch box with the two 3-wires?

B. What other wires are in the ceiling fixture box?

C. What other wires are in the switch box with the lone 3-wire?[/quote]

WIRING DIAGRAMS I PUT TOGETHER IN WINDOWS PAINT. HOPEFULLY SOMEBODY CAN HELP ME. THANK YOU VERY MUCH.
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Old 06-22-2011, 04:02 PM   #5
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Wiring 3 ways switches (2)


Sorry the diagrams are so small, I had to resize them so the forum specs would accept them.
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Old 06-22-2011, 04:46 PM   #6
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Wiring 3 ways switches (2)


Are you trying to control the switch leg labled 'main' ceiling light' in box # 2 ?
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Old 06-22-2011, 05:27 PM   #7
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Wiring 3 ways switches (2)


Yes, I am trying to control the main ceiling light from both switch sites, there are no wires hooked up yet. They are just hard wired in right now. I have not placed any switches in the boxes yet. Basically, I need to install 2 3-way switches, 1 single pole for outside lights in each box, and 1 single pole in the 1st box for control of recepticals.
so basically, a 3 way, and 2 single pole in box #1
and a 3 way and 1 single pole in box #2
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Old 06-22-2011, 05:43 PM   #8
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Wiring 3 ways switches (2)


If you have power at box 2 and it is the same circuit as the power at box 1 you could do the following:

Disconnect the wire in box 1 connected to the 3 wire in box 1
Connect a 3 way switch at box 1 using the 3 wire using the black wire as the common.
In box 2 leave the neutral connection you have shown, connect the hot power wire to the common of a 3 way switch connect the black wire from the three wire to the black wire going to the fixture, connect the white and red from the three wire to the other two screws on the 3 way switch.

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