On another thread @Steptoe commented on my electrical setup:
I have had a look around and my RCBOs are to BSEN 61009-1, and I think that it is OK if not quite latest best practice. GIven that the setup meets regs circa 2014 I think I am reasonably happy.
A few questions if I may:
What is a TT system and a TN system? What are the differences and how can I tell which one I have in place?
This is my consumer unit.
Ferdinand