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Cable support

  1. Mar 21, 2017 #1
    I have a project of more than 40 floors in height, in which the cables go from ground floor to each of the floors (1 tube 2-1/2" PVC + 4 conductors THHN 3/0 + ground in the higher floors ) The designer recommends the use of OZ / GEDNEY type S cable clamps with pozi-grip These supports are very expensive and I want to know what alternatives are there to support the cables since the path is long.
     
  2. jcsd
  3. Mar 21, 2017 #2

    berkeman

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    Staff: Mentor

    Welcome to the PF.

    What country is this for? What electrical codes apply to these wire runs? Is it allowed to use non-conducting PVC tubing for wire runs in commercial buildings where you are?
     
  4. Mar 22, 2017 #3
    If you may interrupt-and terminate- the pvc conduit all 60 ft [see NEC Table 300.19(A)]-4 floors about-you may use usual support grips -Hubbel-Kelems-for instance. A box or a piece of covered cable tray is to be provided in this place. See-for instance :
    http://www.graybar.com/manufacturers/hubbell/wdk/kellems-strain-relief-grips
     
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