I wanted to come back here @macter54 to revisit the information you shared. As you know I have the 2.2KW spindle but I am going to try to send it back.
I looked at the breakers that correspond to the room the machine is in at it is a 15A breaker. This room has several outlets running computer etc. This begs to ask the more important question. Should the plug the run the CNC control box and pc and VDF be on their own.

To give you some background info. I am upgrading to a spindle because I wanted more cut accuracy/ better side finish and we able to cut alum. The 2.2KW with its 4 bearings seemed rigid enough for the job.