12/4 to run constant and switched receptacles in 2 gang boxes

Discussion in 'Electrical Forum discussion & Blog' started by pex006, Apr 2, 2014.

  1. pex006

    pex006 Member

    Messages:
    41
    Location:
    Pittsburgh, Pennsylvania
    Hi could I use 12-4 to have one constant hot duplex receptacle and one split switched receptacle controlled by 2 switches in the same 2 gang box? Any problems with doing this?

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    Last edited: Apr 3, 2014
  2. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,304
    Location:
    Cave Creek, Arizona
    I assume the "hot conductor" where they all connect together is common to all the feeds, in which case yes.
  3. pex006

    pex006 Member

    Messages:
    41
    Location:
    Pittsburgh, Pennsylvania
    Yes. I would be following this diagram below, but I will replace the 12-3 sections with 12-4 and pigtail to the hot in Switchbox B.

    Wiring concept with power through junction box.jpg
  4. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,304
    Location:
    Cave Creek, Arizona
    Your diagram looks like a ball of yarn. I do not see any outlets which are NOT being switched, even though the original question was about "unswitched" receptacles. What is the "switch" on top with the 12/2 connected to it doing?
  5. pex006

    pex006 Member

    Messages:
    41
    Location:
    Pittsburgh, Pennsylvania
    Here is a revised diagram. I have to use a junction box because the walls are narrow and there are channels for only one cable to the boxes. All the other constant receptacles to meet code are accounted for on another circuit. Does this look correct? Any problems with this concept?
    Final wiring concept.jpg
  6. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,304
    Location:
    Cave Creek, Arizona
    It still looks like one of Johnny Carson's maps. The only thing missing is the "fork in the road". IT appears that you are using a 12-4 between the switches for a pair of 3 way travelers. and a single pole switch. These switches seem to be controlling a multiplicity of outlets. It may have to be a very large "J" box to handle all those (20) wires.
  7. pex006

    pex006 Member

    Messages:
    41
    Location:
    Pittsburgh, Pennsylvania
    Your hilarious! That one gave me a good laugh! I'll have to rethink it and try to come up with something a little less complicated for switching these receptacles or just switch one overhead light instead.
  8. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,304
    Location:
    Cave Creek, Arizona
    It would be less cumbersome if you could run the wires from outlet to outlet instead of all meeting in one place.
  9. Reach4

    Reach4 Well-Known Member

    Messages:
    2,850
    Location:
    IL
    Not a pro, but it looks OK to me.

    Consider having at least some of the outlet boxes with 4 inch boxes to give 3 unswitched outlets and 1 switched in the box.
  10. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,304
    Location:
    Cave Creek, Arizona
    quote; Consider having at least some of the outlet boxes with 4 inch boxes to give 3 unswitched outlets and 1 switched in the box.

    They will ALL have to be 4" square boxes because they are all "live duplex" and TWO switched outlets IF he used "Despard' modular then he could have a live and two switched ones in a standard 'handy box" if he could figure out how to jam all the wires in to it.
  11. pex006

    pex006 Member

    Messages:
    41
    Location:
    Pittsburgh, Pennsylvania
    One more question. I was going to use 12-4 since these are switched receptacles, but would 14-4 be acceptable? This is all that will be on this circuit. There are other constant outlets in the room that are on other circuits and the electric fireplace has a dedicated circuit.
  12. Reach4

    Reach4 Well-Known Member

    Messages:
    2,850
    Location:
    IL
    14 AWG is good for up to 15 amps.
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