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Threading cables through joists - support need?

Discussion in 'Electrics UK' started by Dain1, 26 Jun 2019.

  1. Dain1

    Dain1

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    If cable is installed perp to joists, threaded thru a series on in--line holes in joists, does the cable need support additional to and between the joists? The gaps between are 320-350

    Not that it seems to have made much difference to the original sparks that wired the house, there's a 1.5mm lighting cable that runs perp to joists thru holes, unsupported other than at joists.

    What is recommended?
     
    Last edited: 26 Jun 2019
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  3. Risteard

    Risteard

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    Clips.
     
  4. davelx

    davelx

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    To what?
     
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  5. Dain1

    Dain1

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    Thank you, yes, I use them when running cables along joists; they're quite popular. What is the max distance between clips? Should I knock up some batten supports between joists and clip at mid point, a bit of a faff but not really an issue. Or can I just rely on the joists when running perp to joists, as in the image?
     

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    Last edited: 26 Jun 2019
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  7. EFLImpudence

    EFLImpudence

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    No need for battens, that will be fine. Can't see any image.

    Be aware, you can't just drill the holes anywhere.
    https://www.diynot.com/wiki/Electrics:route
     
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  8. conny

    conny

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    Let them span the gap with no support but have a bit of slack so they droop a bit. If you ever need to shorten a connection at a fitting you will then have the slack to pull through if required. Nothing worse than having to remake a connection if you install a new fitting, only to find someone has cut the cables close to the ceiling or clipped it 2" before it goes through the ceiling.
     
  9. Risteard

    Risteard

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    I assumed he was talking about the bit along the joists turning from one hole before turning into another hole, rather than a straight run. It wasn't that clear in the OP what the situation was.
     
  10. JohnW2

    JohnW2

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    Maybe we were reading different OPs, since ...
    ... seems pretty clear to me.

    Kind Regards, John
     
  11. DIYnot Local

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