fewest splices possible?

Discussion in 'Electrical Forum discussion & Blog' started by trackerxx, Mar 3, 2008.

  1. trackerxx

    trackerxx New Member

    Messages:
    7
    When running a dedicated 20-amp circuit for a gas dryer I assume you should run the wire with the fewest splices possible. What's the actual code for this? The wire run is about 40 feet and I am thinking I will need at least one junction box.

    Thoughts, opinions?


    Thanks.
  2. kd

    kd New Member

    Messages:
    207
    There is no limit on the number of splices. A properly done splice will have resistance equal to an unspliced piece of wire. Electricians try to limit splices because they take time.
  3. trackerxx

    trackerxx New Member

    Messages:
    7
    thanks

    Thanks.

    I appreciate it. I don't mind taking the time and am very methodical and careful to make good splices.
  4. Chris75

    Chris75 Electrician

    Messages:
    608
    Location:
    Litchfield, CT
    You need a dedicated circuit for the laundry, but why do you feel you will need at least one splice?
  5. jwelectric

    jwelectric Electrical Contractor/Instructor

    Messages:
    2,534
    Location:
    North Carolina
    plug it into the same receptacle as the washing machine is plugged into
  6. trackerxx

    trackerxx New Member

    Messages:
    7
    splice

    I wanted a junction box to make the wire run easier since I am planning to do the run in sections. (Part of the run will be romex since it will be behind sheetrock.) The exposed parts will be EMT.

    I assume this is ok.
  7. kd

    kd New Member

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    207
    Your splice should be mechanically and electrically secure prior to the application of the wire nut. Twist the bare wires.
  8. sbrn33

    sbrn33 Electrical Contractor

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    31
    Location:
    Fremont, NE
  9. jdoll42

    jdoll42 Computer Systems Engineer

    Messages:
    68
    Location:
    In Illinois near St. Louis, MO
    I can't begin to tell you how many times I've seen wires fall out of the nut because they weren't twisted together first. I always twist my wires then nut them. Why risk a fire or something when you can just spend an extra 5 seconds twisting the wire together first?

    Also, at least for me, it's easier to get the nut on with the wires pre-twisted, especially when you are dealing with more than 2 wires. As ked said, just make sure they are mechanically secure before nutting them and you won't be sorry.
  10. Alectrician

    Alectrician DIY Senior Member

    Messages:
    689
    It's because the nuts weren't twisted on tight enough, not because the wires weren't pre twisted.

    In a proper installation the wires will twist inside the nut. Personally I think it is harder with 4 to 5 wires to get a good pre twist going. The outside ones tend to slip around the inside ones. If they are all laid in and held together with your fingers, the nut will keep them from splaying apart.

    Is that a word?...splaying???
  11. jdoll42

    jdoll42 Computer Systems Engineer

    Messages:
    68
    Location:
    In Illinois near St. Louis, MO
    The local inspector told me to not have more than 3 (maybe 4) wires under a single nut for that exact reason. I designed my wiring in my house to keep multiple wire junctions to a minimum. In some remodel work I've done with the inlaws, they had some nuts with 5 or 6 wires each under them. I broke that mess up into several nuts with only 3 wires each. I just feel safer that way. That's my $0.02 worth. Everybody has their own methods and reasons. That's just mine!
  12. frenchie

    frenchie Jack of all trades

    You'll run into box-fill issues, if you take that logic too far.

    Also, more connections = more things that can go wrong.

    As for pre-twisting, it can cause its own set of problems, since it doesn't force you to twist the nut hard enough (that sounds wrong, lol...). So your connection might be solid, but the nut fall off - leaving you with an exposed splice.

    Nothing wrong with 5 or 6 wires under a single nut, but it's got to be the right-sized nut (i.e., NOT a red forced on & tape around the exposed bits of wire).
  13. Mikey

    Mikey Aspiring Old Fart, EE, computer & networking geek

    Messages:
    2,714
    Location:
    Central Florida
    I just installed a bunch of new Halo ICAT fixtures that came with push-in splices already attached to the fixture wires:

    Ideal push-ins.jpg

    (I'm not sure whose connector they used -- possibly OEMed.) Installing was a snap and very fast. I see a real problem if I ever need to change anything, but in this application it's not likely. Scuttlebutt from other forums is that they avoid the problems that gave backstab receptacles a bad name, and there's no twisting, etc.
    Last edited: Mar 16, 2008
  14. kd

    kd New Member

    Messages:
    207
    In my class we have experimented with pre twisting. If you do not twist, the connection is weak especially if you are doing more than two wires. One wire can slide out when you are shoving the wires into the box. Some manufacturers say "no need to twist wires prior to application of the wire nut" on the box--some do not. Are you going to stop and read every box? Also, who will be called back to fix a dead circuit? Conclusion: Refer to the King, Chubby Checker: Come on Baby, Let's do the twist!

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