Hi guys.

I have just done an EICR on a rental. They have relatively recently had a shower installed (brown/blue cable) with no local isolator fitted. The CU is quite old so the mcb's can't be locked off and neither can the up front rcd. Does a C3 sound right or no code just a mention. I have looked at a couple of Mira installation manuals for reference and they state recommended isolation switch rather than requires so as far as i can see not a manufacturers instruction either.

Gary