Wiring a 3 way switch


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Old 08-06-15, 11:31 AM
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Wiring a 3 way switch

Just want to say thank you in advance, I've gotten a lot of helpful advice from you guys. Is my wiring correct? In my living room, I have 6 recessed cans all going on the same 3 way. They are in two rows of 3 (to help you visualize). To make less confusing ill use the abbreviation L1R1... meaning light 1 row 1, etc

I have 12-2 power coming in at Switch1.
Then ran 12-3 from S1 to L1R1. From L1R1 ran 12-3 to L1R2. Then 12-3 from L1R2 to S2.

Ran 12-2 between each light in the same rows.

In other words...

12-2(power)----S1----(12-3)----L1R1----(12-3)----L1R2----(12-3)---S2.

L1R1----(12-2)----L2R1----(12-2)----L3R1.

L1R2----(12-2)----L2R2----(12-2)----L3R2.

Also used 12 wire for lights because my father in law had a ton of extra wire.
 
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Old 08-06-15, 11:49 AM
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Do you have a 12-3 between the switches in addition to the 12-3 to the lights?
 
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Old 08-06-15, 11:56 AM
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No. From reading other post, I thought thats what I would need.
 
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Old 08-06-15, 12:02 PM
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If I add that 12-3 between the switches, then the wires between each light can be 12-2? So the 12-3 currently between the 1st lights in each row is unnecessary?
 
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Old 08-06-15, 12:02 PM
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You need two wires for travelers between the switches. What are you using for travelers.
 
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Old 08-06-15, 12:10 PM
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Based on what I read, I didn't think I needed 12-3 between the lights.
 
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Old 08-06-15, 12:15 PM
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Old 08-06-15, 12:18 PM
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Sorry I miswrote.
12-2(power)----S1----(12-3)----L1R1----(12-3)----L1R2----(12-3)---S2.
What is the purpose of each wire of the 12-3?
 
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Old 08-06-15, 12:34 PM
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Two are travelers with one being hot, one neutral, and ground? Correct
 
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Old 08-08-15, 04:06 PM
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The clearest way to wire this is to run a 12-3 from one switch directly to the other switch. If the best route goes to the light fixtures, then run this cable around the outsides of the #1 light fixtures.

Then you will not need 12-3 among the lights themselves.

Travelers are both considered hot. The third wire in the 12-3 traveler cable is a feed or a return depending on its sequence in the out-and-back path to the far switch.
 
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Old 08-08-15, 04:48 PM
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Two are travelers with one being hot, one neutral, and ground? Correct
No. Not even close really.

Simplest way:

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This is a way that meets NEC 2011 code:

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Last edited by ray2047; 08-08-15 at 05:06 PM.
 

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