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Old 05-27-2012, 11:44 AM   #1
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Help with wire configuration


Hello, I recently bought a house a few months back. I was in the process of starting to install a new light but came across what I think is a weird wire configuration for our foyer light. There are 2 3-way switches and 1 4-way switch. There is 14/3 wire coming into both 3-way switches. There are 2 14/2 cables coming into the 4-way switch. I thought the 14/3 should be coming into the 4-way switch and then back out to the second 3-way switch. I'm a little confused on this configuration. Could anyone be able to help me figure out how this is wired?

Thanks,
Jason

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Old 05-27-2012, 12:32 PM   #2
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Quote:
Originally Posted by jaason2004 View Post
Hello, I recently bought a house a few months back. I was in the process of starting to install a new light but came across what I think is a weird wire configuration for our foyer light. There are 2 3-way switches and 1 4-way switch. There is 14/3 wire coming into both 3-way switches. There are 2 14/2 cables coming into the 4-way switch. I thought the 14/3 should be coming into the 4-way switch and then back out to the second 3-way switch. I'm a little confused on this configuration. Could anyone be able to help me figure out how this is wired?

Thanks,
Jason
Its not weird, a four way switch only requires 4 conductors. The real problem is that if you can't draw these wiring diagrams on paper, its hard to envision the endless wiring possibilities that are possible.

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Last edited by stickboy1375; 05-27-2012 at 12:36 PM.
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Old 05-28-2012, 07:36 AM   #3
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Why are you fussing with the switches when the light connections are in the ceiling? Should be no need to rewire the switches to get the light to work.
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Old 05-28-2012, 07:41 AM   #4
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This is a bit unconventional but it can work if all the cables from the switches go back to the fixture box. It would need to be one large box to fit all the cables into it properly.
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Old 05-28-2012, 01:07 PM   #5
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Heres a diagram although it may not match your setup. Power coming into this setup via the 3-way switch on the right.
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Old 05-28-2012, 01:29 PM   #6
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If you are replacing a switch make the new connections the same as the old. No need to mess with any connections not related to the fixture.
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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 05-28-2012, 02:38 PM   #7
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Heres a diagram although it may not match your setup. Power coming into this setup via the 3-way switch on the right.
Thats the problem, so many ways to to wire a 3way 4way setup.

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