Help spread the word / share us on your favorite social media networks

Facebook Twitter StumbleUpon Reddit LinkedIn

4 way wiring.
Don't let your house go up in Flames! Get it Right the First time!

4 way wiring.

CLICK HERE

4 way wiring.
Residential Wiring - The Right Way!

Wiring Information for the Do It Yourself Homeowner

Results 1 to 4 of 4

Thread: 4 way wiring.

  1. #1
    Join Date
    Feb 2017
    Posts
    2

    Default 4 way wiring.

    I have a 4 way circuit in a room with 3 entrances. I am using an extra deep octagon box as the light mount / junction box. My question is, I have to run travelers to the 4 way switch. This requires 4 conductors. I can't find 12/4 NM locally. Can I use (2) 12/2 wires, relabeling both white wires, and still be code compliant.

  2. #2
    Join Date
    Feb 2012
    Location
    Kent, WA
    Posts
    219

    Default

    You usually need two 14-3 cables to the 4-way switch, as there is either a neutral or a switched hot that needs to get to the last 3-way. Recolor the white only if it is a switched hot returning from the far end and use red/black as the 4-way travelers. This assumes a daisy chain method from switch to switch to switch.

    If all these cables are octopussing out from one central octagon box, then two 14-2s would be fine. That octagon box is going to be rather crowded with that approach and probably need to be at least 30 cubic inches of volume.
    Last edited by suemarkp; 02-28-2017 at 11:44 PM.
    Mark
    Kent, WA

  3. #3
    Join Date
    Feb 2017
    Posts
    2

    Default

    Yes, i have an octagon box with a deep extension. What was confusing me is that I wont have a dedicated neutral in the cables running to the 4 way from my central box, not that it would have anything to attach to. My understanding of the code is that a neutral must be present at every switch.

  4. #4
    Join Date
    Feb 2012
    Location
    Kent, WA
    Posts
    219

    Default

    One of the exceptions to 404.2(C) {the rule requiring a neutral at every light switch box} is this:

    (5) Where multiple switch locations control the same lighting load such that the entire floor area of the room or space is visible from the single or combined switch locations.

    This is basically a 3-way switch exception if you can see the whole room from any of the switch locations.
    Last edited by suemarkp; 03-02-2017 at 12:40 AM.
    Mark
    Kent, WA

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •