480v is a common industrial voltage useful for any type of large motors. It would not be desirable in a restaurant or small commercial application.
It's not going to be worth it to pull in 480v. The cost of meter, panel and wiring upgrades will far exceed anything you save in equipment even if the power company will pull it in off the pole for free.
One leg of 480 is 277v so if you have 277v you must have 480v. 208v is a totally separate issue.