enter image description hereenter image description hereenter image description hereChandelier installed, New Duplex switch--Done!5 --(ignore switch on left for outdoor light)I have four recessed ceiling lights controlled by two three-way switches in my kitchen. I want to add a chandelier and would like to replace one of the three-way switches with a duplex switch(so I don't have to install a larger box) so the chandelier can be turned ON/OFF separately from the existing recessed lights. Can I grab power for the chandelier from the existing three-way switch? How would this be wired? I'm in the USA(NYC).

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    Depends on how it is currently wired. Can you show how many and which wires you have at the three-way switch you want to upgrade? – Jeffrey supports Monica Nov 28 '17 at 21:41
  • Hi Jeffery, I will look at the switch in question and then report. I would like to be able to snake a bx cable from the chandelier's new mounting box to the box where the single switch currently is and replaced it with a double switch. – Gary Nov 28 '17 at 21:48
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    Pictures would help. – Paul Logan Nov 28 '17 at 23:09
  • @Ken understood exactly what I was asking. His answers and schematic helped me to achieve exactly what I wanted to do.. How do I post pictures? – Gary Dec 14 '17 at 20:15
  • You can post pictures to imgur and link them here – ThreePhaseEel Dec 14 '17 at 23:16

The key for you will be finding a double switch that has a 3 way and a one way, seeing as you want to eliminate the need for changing out your box - assumption here is that you have an existing installation with drywall already in place. There is another factor at play though - NEC CODE requirements for how many wires you can put into that existing box. - How much space - you can't just stuff more wires just because you might have a wire hole to feed them into.

However installing a bigger box is really not that hard in this situation as some newer boxes have the box mounting screws internally - not on the outside where it would be difficult to mount in an existing installation (and yes they are screws - quite nifty for about $3.00 USA).

Your wiring might look something like this below.

3Way and Chandeliers

Below you will find an example of the SMART box by Madison Electric

In your situation this makes perfect sense to use.} The Tabs for studs - if you don't need / use them they are removable...

Madison Electric 3 Gang SMART box

  • Thanks Ken! I will search for this type of switch 1 / 3 way. Do they make this type of box in metal, plastic is not typically used in NYC. – Gary Nov 29 '17 at 14:44
  • I just found that one of the major manufacturers does offer single pole / 3-way combo switches! – Gary Nov 29 '17 at 17:12
  • It is a special material similar to a plastic. I don't think they make them in metal. I am not sure why they would not use it in NYC. I don't know if there is a special city code requiring metal boxes or not ( I doubt there would be - but then again it is NYC; also NYC has a lot of OLD construction;not like they are building new neighborhoods. If you are in a large building like a condo unit it might be codified to be all metal. I just don't know NYC electrical code - for that you can contact the City building code department and ask them if there is a requirement that the box be metal. – Ken Nov 30 '17 at 4:49
  • @Gary see my comment above. – Ken Nov 30 '17 at 4:50
  • Ken, Thanks for all your help with this. The hot source is connected to both commons on the 3-way SW1 and single pole SW1 using a jumper? – Gary Nov 30 '17 at 14:43

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