Hey Bill!
It's a Dewalt, 5hp, It was shipped on Friday, hope to get it tomorrow or Tuesday, then get it up 2 flights of stairs. Can't wait for for that.
Aircompressorsdirect.com (I bought it from) lists it at 230.
Home Depot, Northern Tool, Amazon...everyone else lists it at 240V. Model numbers cross check and it's the only 80 gallon compressor Dewalt makes, so I'm assuming it's 240V.
When I google running 230V or 240V on 208V, I get a lot of ominous threads:
230v motor on 208v? - The Garage Journal Board
Running 230V compressor on 208V system used to power servo motors - Electric motors, generators & controls engineering - Eng-Tips
208V feeding a 240V motor? - ECN Electrical Forums