I have fitted 10mm2 gas and water earths and, while the floorboards are up, I want to address other wiring. My supply board is as follows:
The fused box on the left has a flat twin plus earth cable, plus an extra earth, running to the consumer unit 5m away. I was thinking of updating to 25mm2 plus 10mm2 earth. These would have to be separate cables, it seems, because I cannot locate flat twin cables of this size these days. Do these cables count as tails, or am I OK just to replace the existing flat twin with separate cables?
Electric Power Supply
Main board installed at purchase, September 1985. Meter updated by SWEB April 2002.