sanUK, Just a small question about pic No.6 with the Pyrotenax cable. Shouldn't there be a sealing gland on the end of that cable?.
The gland was filled with bitumen yes BITUMEN when i removed it, i stripped the gland down later after removing the old pyro. The cable was a sub main supplying a farm outbuilding, and looked to be the original wiring, at a guess 1950`s (ish).