No, I'm pretty sure he means "across the 2 high legs of a 120/208 3ph Wye service", and I'd never heard that idea suggested before. I can see why it reduces the amount of copper you need to run, but it seems as if it would have compensating disadvantages, though I can't think precisely what they might be at the moment. -- jra
----- Original Message ----- > From: "Ingo Flaschberger" <i...@xip.at> > To: "Jay Nakamura" <zeusda...@gmail.com> > Cc: "NANOG" <nanog@nanog.org> > Sent: Thursday, December 2, 2010 11:22:32 AM > Subject: Re: Want to move to all 208V for server racks > Dear Jay, > > > > I really want to move all newly installed internal and customer > > racks > > over to all 208v power instead of 120v. As far as I can remember, I > > can't remember any server/switch/router or any other equipment that > > didn't run on 208v AC. (Other than you may need a different cable) > > Anyone have any experience where some oddball equipment that > > couldn't > > do 208v and regret going 208v? We won't have any TDM or SONET > > equipment, all Ethernet switches, routers and servers. I have > > control > > over internal equipment but sometimes customers surprises you. > > you mean 240V AC 50HZ and move from 120V 60Hz? (or also 50Hz) > > you will need to check each device if it supports 240V, commonly the > specified power ratings are printed at a stricker on the device > itself. > > Kind regards, > Ingo Flaschberger
