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Thread: CLAMP BACK/BACKSTRAP

  1. #1
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    CLAMP BACK/BACKSTRAP

    If running 3/4" or 1"EMT exposed on concrete wall so you usually use these or just with RGS? Thanks.

  2. #2
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    I use typical 1-hole straps, unless the quantity calls for strut and strut-straps. What are you referring to?
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  3. #3
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    wet location ??
    At my age, I'm accustomed to restaurants asking me to pay in advance, but now my bank has started sending me their calendar one month at a time.

  4. #4
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    Quote Originally Posted by mstrlucky74 View Post
    If running 3/4" or 1"EMT exposed on concrete wall so you usually use these or just with RGS? Thanks.
    Whats RGS?

  5. #5
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    Rigid Galvanized Steel which is a type of RMC.
    Rob

    Moderator

    All responses based on the 2014 NEC unless otherwise noted

  6. #6
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    They make one hole straps for rigid also. I had some one tell me once if you ran the pipe horizontal you had to put the strap below the pipe. (so the pipe doesn't jump out of the strap)

  7. #7
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    Despite having heard that, I always put 1-holes on with the strap above the conduit, because that way the conduit hangs straight down from the screw. With the strap below the conduit, the pull is away from the wall, possibly pulling anchors out of the holes.
    Code references based on 2005 NEC
    Larry B. Fine
    Master Electrician
    Electrical Contractor
    Richmond, VA

  8. #8
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    Quote Originally Posted by LarryFine View Post
    Despite having heard that, I always put 1-holes on with the strap above the conduit, because that way the conduit hangs straight down from the screw. With the strap below the conduit, the pull is away from the wall, possibly pulling anchors out of the holes.
    You and me against the world, baby.
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  9. #9
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    Quote Originally Posted by AKElectrician View Post
    Whats RGS?
    rigid galvanized steel conduit

  10. #10
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    Quote Originally Posted by GerryB View Post
    They make one hole straps for rigid also. I had some one tell me once if you ran the pipe horizontal you had to put the strap below the pipe. (so the pipe doesn't jump out of the strap)
    Use the heavier walled straps and it don't really matter too much.
    I live for today, I'm just a day behind.

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