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Discuss Cables in concrete floor. in the Electrical Wiring, Theories and Regulations area at ElectrciansForums.co.uk.

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  1. rich.250
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    rich.250 Electrician's Arms

    Location:
    Cornwall
    Business Name:
    Rich Williams Electrical
    Just been to look at a job, to rewire a kitchen, wiring to centre island.
    Only thing is it is on a 1st floor with concrete floor.
    Just wanted opinions on complying with regulations as to cables in floors.
    Would the usual 50mm from floor or earthed armouring or containment apply?
    Others have quoted for PVC conduit to island. I cant see how this complies? Unless its over 50mm from top and bottom
    Thanks
     
  2. telectrix
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    telectrix Scouser and Proud of It Trusted Advisor

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    cheshire/staffordshire
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    Telectrix
    earthed galv. conduit in my opinion.
     
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  3. rich.250
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    rich.250 Electrician's Arms

    Location:
    Cornwall
    Business Name:
    Rich Williams Electrical
    That's what I thought.
    If they chase out 50mm deep it will be just as if it was in a joist, but the floor will probably collapse. ;)
    I have seen cables mm off the floor in PVC before.....
     
  4. Engineer54
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    Engineer54 Guest


    You would have a top screed of at least 50mm and probablly more on top of the floor slab. Screed is not structural and therefore no problem to chase out and backfill...
     
  5. Guest112
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    Guest112 Guest

    like others said earthed metal conduits no need for 50mm depth with that mate and if in pvc rcd??//
     
  6. rich.250
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    rich.250 Electrician's Arms

    Location:
    Cornwall
    Business Name:
    Rich Williams Electrical
    The circuits will be Rcd protected.
    I didn't think rcds could be used to protect cables in a floor or ceiling?
    Just walls?
    Or am I being dumb...... Lol
    Thanks for the help guys
     
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