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Discuss Cables through drilled joists in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. Wonderwall
    Offline

    Wonderwall Electrician's Arms

    Location:
    Newcastle
    Hello peeps, just looking for clarification on my practices here .
    In the past , I have taken many cables through the same hole drilled in a joist . Mostly lighting and smoke detector cables , not heavily loaded ones , but on site , time is sometimes critical.
    Have I followed " normal practice " here , or have I committed a serious bad practice?
    Thanks in advance for honest replies .
     
  2. diditrain
    Offline

    diditrain Electrician's Arms

    Location:
    north west
    Normal practice, as long as you don't try to put too many through the same hole, resulting in damage to the cable sheath.
     
    • Like Like x 1
    • Dislike Dislike x 1
  3. robd
    Offline

    robd Electrician's Arms

    Location:
    East Anglia
    Pretty standard I'd say..within reason anyway. If you are ramming them in so the hole is totally full I'd be drilling a line of 2 holes
     
    • Agree Agree x 2
    • Like Like x 1
  4. davesparks
    Offline

    davesparks Forum Mentor

    Location:
    guildford
    If you drilled a separate hole for each cable the joist would tear down the middle like a book of stamps.
     
    • Funny Funny x 2
    • Like Like x 1
  5. Wonderwall
    Offline

    Wonderwall Electrician's Arms

    Location:
    Newcastle
    Thanks folks, :)
     
  6. 1Justin
    Offline

    1Justin Electrician's Arms

    Location:
    Surrey
    Business Name:
    Circitas Ltd
    Draw new one in very slowly if it's getting a bit close. You can build up heat and melt insulation off the fixed cable quite easily.
     
  7. telectrix
    Online

    telectrix Scouser and Proud of It Respected Member

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    and a squirt of washing up liquid helps prevent damage. also you will have the benefit of clean cables.
     
    • Like Like x 3
  8. mossep
    Offline

    mossep Regular EF Member

    Location:
    Kent
    Always feed new cables un underneath the others if pulling through from below, or on top if pulling through from above, it will help reduce friction burns to the cable sheath
     
    • Agree Agree x 1
  9. JK-Electrical
    Offline

    JK-Electrical Electrician's Arms

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