I have 3 machines now, a 200DX, I-MIG200, and a Power Plasma 60.
I was thinking of building the cart, then adding 3 metal plug boxes on the back that all the machines can plug into. Then having a extension cord go from that to a plug to the wall outlet.
Since I will only have one machine running at a time, I would never overload the breaker.
What you guys think?