VFD supplied by RCBO vs MCB?

[mattnedgus]

Ah, that wasn't clear from the first paragraph, it seems to link the issues.
I have overload only breakers on workshop equipment as no RCD I've found deals with my MIG welding equipment, it's all inductive kit, none of your modern switch mode stuff, and it deals better with fine work than any switch mode stuff I've yet tried.

Yeah this was kind of my thinking - that just overload-only protection might be more reliable. At the same time I want to be protected from any shorts that might develop so an RCD would be some kind of peace of mind. I think if I put in an RCBO and keep the two sockets still to the overload-only MCB it gives me options. At the very worst I can just swap the RCBO back to an MCB at some point in the future!

I'm sure I'm making it more complicated than it needs to be but I like to deal with consumer units as little as possible :-)