nanog mailing list archives
Re: Why choose 120 volts?
From: "Alex H. Ryu" <r.hyunseog () ieee org>
Date: Tue, 26 May 2009 15:48:17 -0500
Also, adding followings. 5) availability from local power provider(s) 6) local regulation such as fire department safety rules... 7) for your own safety... (120V may not kill people, but 240V can do...) If you want better, why not just have everything to DC power ? Something like 48V... Alex Wayne E. Bouchard wrote:
1) Equipment used to not be dual voltage 2) For smaller scale, 120V UPS and distribution equipment is usually cheaper 3) 120V embedded itself into operations as a result. 4) We're all lazy and hate change. On Tue, May 26, 2009 at 12:39:10PM -0700, Seth Mattinen wrote:I have a pure curiosity question for the NANOG crowd here. If you run your facility/datacenter/cage/rack on 120 volts, why? I've been running my facility at 208 for years because I can get away with lower amperage circuits. I'm curious about the reasons for using high-amp 120 volt circuits to drive racks of equipment instead of low-amp 208 or 240 volt circuits. ~Seth--- Wayne Bouchard web () typo org Network Dude http://www.typo.org/~web/
Current thread:
- Re: Why choose 120 volts?, (continued)
- Re: Why choose 120 volts? Owen DeLong (May 26)
- Re: Why choose 120 volts? Ray Sanders (May 26)
- Re: Why choose 120 volts? Alex H. Ryu (May 26)
- Re: Why choose 120 volts? Barney Wolff (May 26)
- Re: Why choose 120 volts? Steve Bertrand (May 26)
- RE: Why choose 120 volts? Dave Larter (May 26)
- Re: Why choose 120 volts? Joe Greco (May 26)
- Re: Why choose 120 volts? Jared Mauch (May 26)
- RE: Why choose 120 volts? Dave Larter (May 26)
- Re: Why choose 120 volts? Alex H. Ryu (May 26)
- Re: Why choose 120 volts? Owen DeLong (May 26)
- Re: Why choose 120 volts? Brian Raaen (May 27)
- Re: Why choose 120 volts? Dorn Hetzel (May 27)
- Re: Why choose 120 volts? Peter Dambier (May 27)
- Re: Why choose 120 volts? Michael Thomas (May 27)
- Re: Why choose 120 volts? Peter Beckman (May 27)
- Re: Why choose 120 volts? Iljitsch van Beijnum (May 27)
- Re: Why choose 120 volts? Seth Mattinen (May 26)
- Re: Why choose 120 volts? Chuck Anderson (May 26)