Cool cool, with that much power I can somewhat assume this will be a three phase power coming in. Three phase generally comes in at 208 pole to pole and 120 pole to neutral (WYE). If you bring in 480v you can get a 230 volt transformer but will loose the 120v capability (DELTA). Personally I would run the delta config tapped a little over 240 volts.
What you're saying is specific to the U.S. / North America. I have to worry about the 208 volt / 240 volt difference for sure and the delta/wye stuff. The rest of the world usually has 415 / 240 wye power. I also prefer 240v delta because higher voltage = more wattage available, plus less current through cables, so higher efficiency.