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Main service cables hidden

Evening All, 

 Came across this today and wondered what people's thoughts were.

An old terreced property had a single story extension at some point. Prior to the extension, I assume the main service cables ran up the outside wall and through to the meter above the back door. 

The extension was built, I assume, over/around these cables. Today I came across them hidden under the plaster above the door (opposite side of the meter, where they would have ran above the outside door before the extension).

These should surely be protected, anyone drilling through them will have no protection device to protect them!

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  • Obviously you can't do anything in the way of RCD or earthed covering protection - not upstream of the DNO's fuse. Mechanical protection is very dubious in these days of nail guns etc.. I agree the best bet is either to leave it uncovered or cover it is such a way that it's obvious that there's something there - perhaps the lid from a large adaptable box or similar. It can be painted to blend in with the decor but still look like something that isn't plain wall.

    The other option (and probably officially the better one) is just to contact the DNO and let them sort it out - it is their equipment and therefore their problem after all. There may have other objections to what's happened (e.g. are the cables running through thermal insulation in the roof space, or because they're now concealed in building structures, potentially at more risk of 'abstraction' than they would like. Perhaps running in a modern concentric cable, perhaps by a different route, would be the better solution all round.

    BTW - there look to be 4off 1-core cables there - is this a looped service or a 3-phase supply?

       - Andy.

  • Hi Andy,

    No, only 2x 1core cables live, the other two have been cut off and none live.

    I am right in thinking there would be a charge from DNO as ultimately the occupier had the extension built over the DNOs cabling? 

Reply
  • Hi Andy,

    No, only 2x 1core cables live, the other two have been cut off and none live.

    I am right in thinking there would be a charge from DNO as ultimately the occupier had the extension built over the DNOs cabling? 

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