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Thread: Cables dragged through 20mm holes in structural steel

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    Cables dragged through 20mm holes in structural steel

    Hi all

    1.5mm flat twin and earth pulled through 20mm holes drilled though structural steel - got to be a no no - right? You can't just put holes through steel supports?

    Client going nuts because i refused to touch another guys electrical work which, among other things that worry me, as a cable route he chose was drilling through the support structural steel numerous times.

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    Diamond Member AndyD's Avatar
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    Are the edges of the holes radiused or are they sharp? If the holes aren't sharp and there's not likely to be cable damage then it could be more of a building regs issue rather than an electrical one. Usually penetrations in structural steel supports would need signing off by a structural engineer.
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