good move methinks since if you get involved a fuse board change is notifiable works to LABC under part P of bldg regs.
Seems like lots of loose connections, which may have led to overheated insulation, so any attempt to disturb it will give more probs.
I wish It was easier to walk away from some jobs my self!!
It's a catch 22.
I think it's time your mate had their installation looked at for safety reason, it may not be just a case of new CU, how olds the wiring.
Those old ceramics used to have asbestos inside them!
Suggest a PIR, you could do that for him and your pal will have an idea to what extent the work is that needs doing.
My mate couldn't get a sparkie for 2 weeks (lives in a sparsley populated area).
Anyway, I went back over and investigated a bit further. The ceramic block had been mounted on particle board (chipboard), and the meter box is at the side of the house, not directly exposed to the elements, but outside the house nevertheless. It has probably been like that for around 20 years, so the chipboard just gave way!
Pulled the block off, and of course, load side was corroded to buggery. Measured directly to the negative side (which I should have done in the first place, but didn't, considering the state of the thing), and got a normal 235 reading.
Cleaned it up, drilled out and put a little larger self tapper into the terminal.
Bobs your uncle.
Even though the ceramic block still floats around a bit, its a good, safe job, but told him to get it replaced nevertheless, and that I am not going to do any more work on it if it remains like that.
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