I am going to replace our old cartridge fuse consumer unit with a new split-load one. While I am at it, I am going to move it from its current inconvenient position (currently you need a step ladder to reach it) to some where more accessible in the dark. So I need to extend the meter tails by about 1m. Having read the archives, I am going to contact my supplier and tell them the fuse seal will be broken to install a new CU, then after removing the old CU I will put in a Henley block to extend the tails down to the new CU.
My question is this, what is the best way to extend the various circuits down to the CU, there is a little slack in the current wiring but certainly not 1m. Would joining them with chocolate block of the appropriate rating be OK? I would put it in some sort of secure plastic box rather like a central heating wiring centre box.