So, I did a bit of checking, and I am thinking they wired something wrong. I am waiting on the companies reply, but from what I can tell, Contactor 2,3,4 should all draw power from 220V/1P connection. While the Main Power should only drive Contactor 1 (which is the Inverter), but it also pushes power to Contactor 4.

Contactor 4 seems to do a lot. It daisy chains wires from the control switches on the Cabinet cnc door, and it also daisy chains N wire, which I still don't know what that means, but it is a smaller gauge wire that connects multiple contactors together. I assume it does mean Neutral. But there is no Neutral on this panel from what I can tell.

The pdf gives a better overview of what is going.