Want to move to all 208V for server racks

[alex at corp.nac.net (Alex Rubenstein)]

> > you mean 240V AC 50HZ and move from 120V 60Hz? (or also 50Hz)
> 
> In US, I think everything is 60Hz.  But I mean 208v single phase.
> (Which is what you get when you combine two 120v single phase legs out of
> three phase, I believe.  I am not an expert on AC...)

That would be considered a 2 pole, 208v receptacle, most commonly a L6-20 or L6-30.