VFD supplied by RCBO vs MCB?

[m_c]

Power being cut cleanly isn't an issue, what is an issue is brown outs/surges/spikes in the incoming power.
I certainly would still want a RCD of some form in the supply.

An issue you may face though is the RCD/RCBO tripping due to the way the filtering in VFDs work. For single phase installations you really want Type A.

[magicniner]

what is an issue is brown outs/surges/spikes in the incoming power.

How does a Residual Current Device help with voltage drop, surges and spikes?

[m_c]

How does a Residual Current Device help with voltage drop, surges and spikes?

It doesn't. I was clarifying what the manual meant by potential disruption to the power supply.

[magicniner]

It doesn't. I was clarifying what the manual meant by potential disruption to the power supply.

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.

[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 :-)

[mattnedgus]

Power being cut cleanly isn't an issue, what is an issue is brown outs/surges/spikes in the incoming power.
I certainly would still want a RCD of some form in the supply.

An issue you may face though is the RCD/RCBO tripping due to the way the filtering in VFDs work. For single phase installations you really want Type A.

Thank you for helping to clarify, I think what I'll consider doing is adding an A-type 40A RCBO and running a 16A socket for the cyclone extractor and two more UK-3-pin sockets - that way, I can try the VFD in the RCBO and if there's a problem, switch at least "it" back to the MCB!