1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

How can I find where the power lines are under my garden?

Discussion in 'Electrics UK' started by dominoman, 4 Aug 2015.

  1. dominoman

    dominoman

    Joined:
    10 Jun 2014
    Messages:
    341
    Thanks Received:
    23
    Location:
    London
    Country:
    United Kingdom
    I would like to redo my overgrown garden and put in a new path, patio and some lighting. It will involve a mini digger as it needs some leveling and digging.

    I currently have an old garage at the end of my garden that has power going to it. Is there any instrument that could find where the power lines go across the garden so I don't accidentally dig them up?

    It might also save me some money if I can tap into the existing power line for my garden lights.
     
  2. Sponsored Links
  3. Iggifer

    Iggifer

    Joined:
    8 Sep 2011
    Messages:
    4,637
    Thanks Received:
    587
    Location:
    Warwickshire
    Country:
    United Kingdom
    Not reliably. The best way is to find either end of the cable by hand, and then extrapolate the route from that, allowing for a bit of deviation from straight (maybe dig a hole in between the two points to confirm)

    It should be reasonably deep, so I guess it depends how deep you are planning on digging?

    As to whether the existing cable is suitable to take a lighting feed from depends on the current set up. but it's unlikely to be of much use to you
     
    • Thanks Thanks x 1
  4. RF Lighting

    RF Lighting

    Joined:
    31 Mar 2006
    Messages:
    19,993
    Thanks Received:
    1,354
    Location:
    Leeds
    Country:
    United Kingdom
    You could hire a cat scanner and tone generator.
     
  5. endecotp

    endecotp

    Joined:
    2 Dec 2013
    Messages:
    3,936
    Thanks Received:
    507
    Country:
    United Kingdom
    • Thanks Thanks x 1
  6. securespark

    securespark

    Joined:
    11 Jan 2004
    Messages:
    36,520
    Thanks Received:
    1,237
    Country:
    United Kingdom
    [​IMG]
     
    • Like Like x 2
  7. flameport

    flameport

    Joined:
    10 Mar 2007
    Messages:
    9,547
    Thanks Received:
    1,884
    Location:
    Poole, Dorset
    Country:
    United Kingdom
    If a mini digger will be used, you should hire the scan tool anyway, as there may be other things concealed underground. While gas, water and electricity supplies should be buried at a certain depth, there is no guarantee of that.
     
    • Like Like x 1
  8. Sponsored Links
  9. westie101

    westie101

    Joined:
    3 Jan 2011
    Messages:
    2,497
    Thanks Received:
    313
    Location:
    Cumberland
    Country:
    United Kingdom
    Do not under any circumstances just hire a CAT (cable avoidance tool), you must also hire a matching signal Generator (GENNY).
    And get some training on how to use it
    The CAT will only positively locate cables that are live & are carrying a reasonable bit of load (usually in the 20 - 30A range as a minimum).
    Research also where your supply cable (talk to your DNO), BT line and the like are
     
  10. dominoman

    dominoman

    Joined:
    10 Jun 2014
    Messages:
    341
    Thanks Received:
    23
    Location:
    London
    Country:
    United Kingdom
    Ah OK. Sounds like it isn't as easy as I thought.

    I think I'd be better off just killing the power while I work and trying to avoid the area where i think the cable is.

    I'm generally adding earth rather than removing so hopefully it will be OK.
     
  11. Iggifer

    Iggifer

    Joined:
    8 Sep 2011
    Messages:
    4,637
    Thanks Received:
    587
    Location:
    Warwickshire
    Country:
    United Kingdom
    You can kill your local power, but if as Westie says, the supply cable comes through your garden, you can't turn that off.

    The DNO should have records though, as should BT, VM etc. A quick call (or 5) should be enough to get the answers
     
  12. endecotp

    endecotp

    Joined:
    2 Dec 2013
    Messages:
    3,936
    Thanks Received:
    507
    Country:
    United Kingdom
    Yeah, that's going to be massively more successful than anything suggested above... Not!
     
  13. bernardgreen

    bernardgreen

    Joined:
    3 Nov 2006
    Messages:
    25,131
    Thanks Received:
    2,482
    Location:
    Bedfordshire
    Country:
    United Kingdom
    Gas man digging a trench near here yesterday knew there were LV ( 230 V ) and HV ( 11 kV ) cables under the grass verge, about 18 inches apart according to the charts. He found them side by side along with a third cable.
     
  14. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page