Just looked back, and you could probably have done with a bigger enclosure.

You won't really save that much space using a PCB for the main PSU.
Just bolt the toroid to a side of the case, then use a big capacitor with some screw terminals and a suitable mount for the capacitor to keep it secure and located. The bridge rectifier also just needs mounted to something flat that'll also act as a heat sink (I've mounted the toroid, cap, and rectifier on a bit aluminium plate in the past).

Then wire the stepper drivers directly to the capacitor terminals. They shouldn't be fused, so there is no need to have that wiring pass through anything else.


I'd be more inclined to hardwire a power lead, rather than use an IEC connector.
Total consumption isn't likely to be that high. At 240V, the steppers are not likely to use more than an amp or two. Even if you were to manage running them all at high enough speed to get the full current through every motor, that is only 2Ax70Vx4, which is 560W or about 2.33A, but you'll never manage that. You'll be lucky if they ever peak above 1.5A.

I'm assuming you'll be using a pretty standard 2.2KW spindle?
At full power, that will be about 10A.

If you really want a connector, a C13/14 will likely be OK provided you use good quality ones as it's quite unlikely you'd exceed the 10A rating for any length of time, or you could go up a size to C15/16.


The bigger issue is likely to be inrush current when you turn things on.
I'd add an inrush limiter to the toroid, just to ease the power on surge.