On Wed, 21 Feb 2018 20:14:03 GMT, Jr Frazier
m wrote:

replying to TURTLE, Jr Frazier wrote:
I have a stratus aircond that goes in a electrial cab that came 480v 1 single
plase. I was think two legs of 480 hot but just wont to check .hate to blow up
2500.00 dollar aircon

If it really says 480 1P then you do use two phase conductors of your
3P. If this was intended to be line to neutral it would be rated 277V,
pretty popular in lighting.