I have a building with 400amp, 240 volts a-c. Im trying to power a 480 ac 100 amp 3 phase 60 hertz machine. Pictures on Twitter. What size and type of transformer do I need to power this machine?
To start with, it cannot be done with a transformer alone. It is clear that you are out of your league.
I am closing this thread in accordance with forum rules. We are not allowed to assist a person who is not an electrician to perform electrical design or installation work. Please bring an electrician into the project.