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Discuss SWA in drain permissable? in the Electrical Forum area at ElectrciansForums.co.uk.

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  1. dksanders
    Offline

    dksanders Electrician's Arms

    Hi All,

    I've been asked to get a supply for a car park PIR light across the car park entrance from the existing light. The only way across would be by running the SWA cable in a drain that runs across the driveway (see picture).

    Is there any reason that I shouldn't do that? I can't think of any regulation of the top of my head that prohibits it.

    TIA

    HOJpPu4ERieQsG7d7xtvvg.jpg +KLbPQMwTt6IHHEQfCx+IA.jpg
     
  2. Vortigern
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    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
    Not deep enough?
     
    • Disagree Disagree x 1
    • Optimistic Optimistic x 1
  3. telectrix
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    telectrix Scouser and Proud of It Trusted Advisor

    Top Poster Of Month

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    is the drain likely to be dug into with a spade?
     
    • Like Like x 2
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  4. Ian1981
    Offline

    Ian1981 Electrician's Arms

    Location:
    North east
    A drain is for drainage and not for cable runs as far as I’m concerned.
    It’s a bit rough I’d say as I don’t like the idea of water in contact and maybe covering the cable.
    Also proximity to other services although not water pipes I wouldn’t do it.
     
    • Agree Agree x 9
  5. pirate
    Offline

    pirate Regular EF Member

    Location:
    Glasgow
    Compacted debris will build up over time, and traffic will compress it into the SWA...sharp gravel, sand, general grit and debris...doesn't look like a great idea...
    however, running it in a steel conduit?
     
    • Useful Useful x 1
  6. telectrix
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    telectrix Scouser and Proud of It Trusted Advisor

    Top Poster Of Month

    Location:
    cheshire/staffordshire
    Business Name:
    Telectrix
    maybe run it in some heavy gauge plastic ducting.
     
    • Agree Agree x 1
  7. westward10
    Online

    westward10 In echoed steps I walk across an empty dream. Staff Member Trusted Advisor

    Location:
    Northamptonshire
    That is not s drain it is a soak away plus that is not the only way across.
     
  8. Vortigern
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    Vortigern Electrician's Arms

    Location:
    England
    Business Name:
    F.H. Electrical
    It looks like that drain is starting to break up anyway. The cement is cracking around it. Not a good future for the cable. Maybe use it and dig deeper than. But regs say 450mm don't they?
     
  9. Colin33
    Offline

    Colin33 Regular EF Member

    Location:
    Cornwall
    I'd be tempted to break out the concrete one side of that drain, lay the swa in some plastic ducting, then concrete over. You may find that existing concrete breaks out really easily, and at least then the cable can be withdrawn/replaced easily in the future.
     
    • Agree Agree x 2
  10. Gavin John Hyde
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    Gavin John Hyde Electrician's Arms

    Location:
    Somerset
    Business Name:
    Sulis Electrical Services Ltd
    why not just whack a pole in the ground and put a solar powered one on it? the council have been fitting them around here in the car parks and park and rides. give out a good amount of light too , the solar panel is not too large either.
     
    • Like Like x 2
    Last edited: Jul 28, 2018
  11. Wilko
    Online

    Wilko Electrician's Arms

    Location:
    Berkshire
    Business Name:
    Wilko Electrics
    Hi - I wouldn't do it - I could reasonably foresee the gully needing cleaning out and or collapsing. And then there's the warning tape ...
     
  12. dksanders
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    dksanders Electrician's Arms

    Hardly
     
  13. dksanders
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    dksanders Electrician's Arms

    There are no other services in the drain
     
  14. Ian1981
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    Ian1981 Electrician's Arms

    Location:
    North east
    I meant the drain is the service
     
  15. dksanders
    Offline

    dksanders Electrician's Arms

    isn't warning tape only required when the cable is buried? as the cable would be sat in the bottom of the concrete trench and protected by the cast covers, it's totally visible.
     
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