Scott,
I saw the thread about 3-ph 480V for a house. I reckon there are some heavy-duty wood/metalworking types here who'd like 3-ph for lathes and other machinery.
What's the problem with 220V to ground? You're not telling me a guy who sits in the driving seat of a huge powerful locomotive doesn't like the idea of more than 120V to gound, are you?!
![[Linked Image]](https://www.electrical-contractor.net/ubb/biggrin.gif)
Before standardization at 240/415V in Britain some areas had 220/380, but the highest pre-standardization voltage was 250/440V.
