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" <if@xip.at> To: "Jay Nakamura" <zeusdadog@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