[bryanbdp]

I need to change my new to me machine to 220 3ph from 480V.
It looks like power comes into the main on/off switch, then goes to a multi tap transformer assembly next to the ATC.
I think I just need to reposition the three bus bars to the 220v position to change the machine to 220v. Is this correct?
The machine came with a 277/480 surge protector, but I guess i'll have to get a 220v delta unit instead.

I ordered a phase rotation tester. I'm assuming if I connect the input wires in the "clockwise" rotation everything should be OK?
Also, the rotary phase converter instructions don't recommend using the manufactured leg to power the controls and so on. Instead, to use L1 and L2 to power the controls. Is this possible or does this machine use 3ph for the controls? If not, which leg should I attach the manufactured lead to?

Is there any way to verify I have the power leads connected in the proper rotation?

Thanks,
Bryan