Just been talking to electrical contractors about CU work at a small flat. It has an 8 way and a (4 way CU for Econ 7). The condition of the wireing is good and the installation looks to have been well done. The cabling within the cu's is Red/Black with green/yellow sleeved earthing. The cabling has been run very neatly within the CU's. The contractor wants to replace them both with a new CU with mcb's - which is nice but the work is going to cost. I would like to see the elec. shower (only) on a separate CU with, say, RCBO., and just replace the existing wire fuse carriers with plugin mcb's. Contractor says words to effect that regulation not happy with that. I can see his point but do not know if it is mandatory?
If I can find the £££ I'll have the whole lot replaced - but is it really needed given the above? thanks.