When to re-wire??

[Spudnik]

I think the most common problem with CU upgrades is the lack or undersized bonding and main earthing which should be addressed.

Deviations are normally green sleeving, non fire rated d/lights where required etc. which can usually be coded accordingly.

 

[Strickers]

With CU changes you do not take responsibility for the whole installation, PROVIDED, the cert states exactly what you did.

I also mark the next inspection sticker with 'CU CHANGE ONLY' so that its clear to anyone coming along to do any other works sometime in the future.

I May be wrong but i was under the impression that if you change a consumer unit your modifying the circuit, when doing a modification it must meet 17th edition. I may have just therefore for past few years since being self-employed been turning away work because i wont' leave a job if it needs remedial work because i think its unsafe. Darn it