In reply to butteredfrog:
> Your electricity feed (and the neighbours by the sound of it) is an overhead feed from a pole to insulators fastened to the wall of your house below the edge of the roof?
Almost. It is an overhead feed from the pylon to the top of the external wall of the neighbour's - about 1 foot away from where their wall becomes my wall.
It appears to be an insulated cable for its entire length and does not attach to much more than some clips on the neighbours house.
The feed does not enter their house, but runs across to my wall and then all the way across my wall to the other side of my property. It then runs down the wall into a cupboard in my property where the meter is located.
It looks like there must be a split behind the wooden board upon which my primary fuse, trip switch and fuse box are mounted, from which the mystery brown cable must then rise up inside the wall of my property to the loft, from which it runs all the way back across the house to the neighbours, into which it enters through a hole in the separating wall. It actually runs across both dimensions of the loft in a diagonal. It is a horrible looking old cable.
> *not a sparkie by the way, but the next door neighbour is, can soon ask him*
Thanks. I guess this is not actually an issue for a domestic electrician as the mystery cable will be property of the distribution board, but I'm at a bit of a loss for where else to start. Well, other than a solicitor but I'm trying not to set fire to money.
(Actually given how daft it all is there is a slim possibility that the mystery brown cable comes out of the neighbouring property on the other side...)
Post edited at 23:35