You mean not fully type tested, how many RCDs are there? Are you on a TT system? When was the work completed?
I can't imagine it being that easy to fit other manufacturers RCDs into a consumer unit, the internals are usually made to fit their own and wired up to suit.
I can't imagine it being that easy to fit other manufacturers RCDs into a consumer unit, the internals are usually made to fit their own and wired up to suit.