3-way Switch Circuit W/light On Each End. - Electrical - DIY Chatroom Home Improvement Forum
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Old 05-31-2010, 06:34 PM   #1
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3-way switch circuit w/light on each end.


I would like to add a light to a 3-way hall light circuit. The power enters at the first light. I would like to add a light after the second switch. I know I could run a wire back to the first light. Is there a way to simply add it to the 2nd switch? I've attached a drawing of my current circuit.

Thanks for your help.
Ray

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Old 05-31-2010, 06:45 PM   #2
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You do not have a neutral wire at either switch. The easiest way would be to run a new cable from the first light to the new light.
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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 05-31-2010, 06:46 PM   #3
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Your neutral only goes as far as the first light box, so you would have to run a new cable from there. These are my favorite diagrams of the different possibilities: http://www.easy-do-it-yourself-home-...g-diagram.html
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Old 05-31-2010, 06:58 PM   #4
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If you convert the switches to a wireless system like an X10 I think you could make it work. Otherwise you need new cables to do it hardwired.
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Old 05-31-2010, 08:00 PM   #5
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If you go with a wireless system make sure the frequencies and modulation scheme won't interfere with your brand of AFCIs.

The three way systems boil down to a 'composite' single pole single throw switch in series with a load [the lamps] and the source [120vac]. So, somehow the two lamps have to be in series and the actual wiring method/diagram and colors should be NEC compliant.

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Old 05-31-2010, 09:44 PM   #6
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Thank you all, for your responses and thanks for the link to the excellent 3-way switch diagrams.
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Old 06-01-2010, 10:57 AM   #7
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What program did you use to make that diagram?

Makes a nice diagram.
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