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Singles in Metal Conduit.

Mornin' All,

                       you have singles in conduit. The singles run in a horizontal plane to a B.E.S.A. box at the top of the run, and then run vertically downward for about 4+ metres. The cables have weight, and that weight causes the cables at the very top of the run to apply pressure on the insulation where the cables change direction from horizontal to vertical. What is your favourite method to prevent damage to insulation and comply with 522.8.4 and 522.8.5?


Thanks.


Z.
Parents
  • Back when I was trained, in the latter years of the 20th century (actually around 1989), I was taught to file off any rough cast edges on Besa boxes for this reason. My suggestion here would be some form of protection (a piece of box gasket material may suffice?) where the cable bears on the edge of the box.  Or something 'orrible involving cable ties and the innocent earthing screw hole ? (assuming the box is accessible which it should be)
Reply
  • Back when I was trained, in the latter years of the 20th century (actually around 1989), I was taught to file off any rough cast edges on Besa boxes for this reason. My suggestion here would be some form of protection (a piece of box gasket material may suffice?) where the cable bears on the edge of the box.  Or something 'orrible involving cable ties and the innocent earthing screw hole ? (assuming the box is accessible which it should be)
Children
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