Help with three duplex plugs

Discussion in 'Electrical Forum discussion & Blog' started by tomcola, Jun 5, 2011.

  1. tomcola

    tomcola tomcat

    Messages:
    5
    Location:
    CT
    I would like to run three duplex plugs. One from a three wire coming in from the middle. I bought 14/3 wire and I find it has four wires. What do I do with the other wire? Also how do I wire it? Three duplex plugs. One in the middle and one on each side. Series is fine because nothing is on them .:confused:
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,129
    Location:
    New England
    You can cap the unused wire (I think). While you can daisy-chain the receptacles, you can't run them in series (they must be wired in parallel if you understand the distinction of series/parallel). Just use the box in the middle as a junction box and branch off to each of the others. Or just go to one, then around back to the other. There is a code issue about box fill, so the quantity of wires and cables in the box will mandate a minimum size of the box - you have to have enough room to bring the wires in, make the connections, and then mount the receptacle in place without it being too cramped.
  3. tomcola

    tomcola tomcat

    Messages:
    5
    Location:
    CT
    Thanks for the info. If you picture a "Y" three wires in at one duplex receptacle, then branching off at each side. How do I wire the last ones ?
  4. ActionDave

    ActionDave Electrician

    Messages:
    351
    Location:
    Colorado
    The romexes going left and right tie to the incoming power and a short piece of wire is added under each wire nut to attach the receptacle. It's called "pig tailing".
  5. jwelectric

    jwelectric Electrical Contractor/Instructor

    Messages:
    2,540
    Location:
    North Carolina
    There is not a device box that is big enough for three 3 conductor cables and a device so you should take the cable to one of the boxes on the end and then to the middle and the last box
  6. LLigetfa

    LLigetfa DIYer, not in the trades

    Messages:
    4,050
    Location:
    NW Ontario, Canada
    A 14/3 will give you two hots, a neutral, and a ground. They are often used for wiring three-way switches and for wiring switched split receptacles. Since you have the third wire, you could split your receptacles and wire the top plug through a light switch.
    Last edited: Jun 6, 2011
  7. jimbo

    jimbo Plumber

    Messages:
    8,997
    Location:
    San Diego
    WHat you really needed was 14/2. The complete designation of the wire you got is 14/3 w/g ( with ground...a bare copper wire.) You just need 14/2 w/g. 14/3 would be used for 3 wire circuits, which is beyond the scope of this discussion
  8. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,811
    Location:
    Cave Creek, Arizona
    quote; One from a three wire coming in from the middle.

    WE, or at least I, have no idea what that means, but it could indicate several different issues all of which are completely different and would require specific wiring to extend them. The key item is that since you do NOT know where the "fourth wire" goes, you may not have the proper experience to do what you want to. The results of improper wiring range from a tripping circuit breaker, to injury or death, all the way up to a burned down house.

    quote; 14/3 would be used for 3 wire circuits

    Or a "split circuit", or a switched outlet on a duplex receptacle, or.........
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