Do all metal boxes need screw-in clamps?

Discussion in 'Electrical Forum discussion & Blog' started by Verdeboy, Sep 20, 2007.

  1. Verdeboy

    Verdeboy In the Trades

    Joined:
    Jun 12, 2006
    I spent about $8.00 on a metal ceiling fan box, but it didn't come with any screw-in clamps. Does that mean it is not required, or do I have to supply my own? The Romex cable is stapled up to a few inches of the opening in the box.

    Is a screw-in clamp required whenever a cable enters or leaves any kind of metal box--be it for a light switch, outlet, light fixture, or junction box?
     
  2. Speedy Petey

    Speedy Petey Licensed Electrical Contractor

    Joined:
    Jun 16, 2007
    Occupation:
    Licensed Electrical Contractor
    Location:
    NY State, USA
    SOME sort of clamp IS required. Whether it be integral to the box or separate.

    With a metal box something needs to secure and protect it.
     
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  4. frenchie

    frenchie Jack of all trades

    Joined:
    Dec 30, 2006
    Occupation:
    Caretaker
    Location:
    Brooklyn, NY and Fire Island, NY
    Far as I know... yes.

    At less than a dollar apiece, why's it matter?

    Must be even less, where you are, since you got the fan box for 8 - fan box costs almost 20 up here.



    edit: dang, I just answered an electrical question from Eric, didn't I?

    :)
     
  5. Verdeboy

    Verdeboy In the Trades

    Joined:
    Jun 12, 2006
    See, that wasn't so bad. :)

    More to come. I like doing electrical stuff. It's nice, clean work (unlike other trades I can think of) and you get to use your brain a lot.
     
  6. snafflekid

    snafflekid Electrical Engineer

    Joined:
    Apr 23, 2007
    Occupation:
    Electrical Engineer
    did you buy a handybox or something similar that has knockouts for those threaded nipples?
     
  7. kd

    kd New Member

    Joined:
    Dec 11, 2006
    Most jurisdictions allow the use of plastic grommets, bushings, if you staple within 8 inches of the box.
     
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