Thanks !
Really getting somewhere now.

So it's decided that I need one power input into my enclosure and split it. Not listening to the bloke that told me I had to run two plugs any more.

So one side of the internal mains split will go to an EMI filter and then to the VFD.
The other side of the split will go directly to the 48V PSU.
One single all in one 10Amp chassis connector / fuse / power switch.
Easy. Job done.

Apart from Emergency stop.
So can anyone confirm why I can't just use an inline mains e-stop button. How does a relay do the job better ?

Thanks massively for your help.
Martin