Thanks for your reply Steve - & apologies for delay in getting back to you.
Correct - there is no RCD protection to ring (or any of the property).
My camera is on the blink, but CU is a DETA & looks fairly old - how can I tell if it will accept an RCBO - is it just physical space ?
Cheers
Hello,
I am running cable for an external socket & lights, with feed from ground floor ring. Is it best practice to fit to replace ring MCB with RCBO at consumer unit, or to fit local RCD on spur from ring ?
Thanks,
Mogster