Thank you a lot for your help.

I willl go with 500VA.

Can you recommend the capacitors specs that I will be needing?

Quote Originally Posted by irving2008 View Post
Steppers are nothing like that, the duty cycle is nothing like steady state. I don't know why you have 6 motors but I'd be surprised if you need more than 60% of the total load and most of the peakiness is handled by the capacitors.
I intend to build a lightweight 2 axis head for 3D foam milling and a rotary axis for wood.