"Dan, U.S. Air Force, retired" wrote

I was poking fun, there are machines that require 660 VAC 3 phase,
but unless you are turning barrels for gunboats you aren't likely to
need one.

There would be an advantage to using 660 3 phase, for machines of the size
we would use. Wires would be easy to run. You could run a piece of 22
gauge wire, and get all of the power you needed! g
--
Jim in NC