Hello, I'm new to this forum. I'm not quite sure about RCD protection for a domestic dwellings - No RCD protection on circuits where cables are not buried to 50mm - I'm of the opinion its a code 3 however some colleagues are saying its a code 2 ( I cant find clarification on this ) - Any ideas? I don't want to over egg a report but at the same time want to be sure I'm giving the right advise