Thanks again for the advice given by 'almost all' on here 
Thought you might like to know I've sorted it... Pretty much pulled almost every floor board up tracking the cables. Breaking the ring at every socket I came (come!) to.
Found a random socket on the floor below that had been connected to the ring upstairs; under the floor upstairs, 2 x grey T&E disappear in the wall, and the socket immediately downstairs is fed with a single white T&E!!
The rogue resistance reading localised to just this run of cable. I can only surmise that someone has joined the two grey to a single white cable in the wall itself, and that somehow moisture or something has got to it. Very odd.
I have cut out the loop of cable to the downstairs socket for now and got the ring back on upstairs - will just loose that one socket for the time being.
Ant.
Thought you might like to know I've sorted it... Pretty much pulled almost every floor board up tracking the cables. Breaking the ring at every socket I came (come!) to.
Found a random socket on the floor below that had been connected to the ring upstairs; under the floor upstairs, 2 x grey T&E disappear in the wall, and the socket immediately downstairs is fed with a single white T&E!!
The rogue resistance reading localised to just this run of cable. I can only surmise that someone has joined the two grey to a single white cable in the wall itself, and that somehow moisture or something has got to it. Very odd.
I have cut out the loop of cable to the downstairs socket for now and got the ring back on upstairs - will just loose that one socket for the time being.
Ant.
