nanog mailing list archives
Re: Want to move to all 208V for server racks
From: Seth Mattinen <sethm () rollernet us>
Date: Thu, 02 Dec 2010 08:38:22 -0800
On 12/2/10 8:30 AM, Jay Nakamura wrote:
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...)
Correct, a L-N connection will get you 120V, a L-L connection will get you 208V. Everything in the US is 60Hz.
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.I have even been looking at USB HD AC adapter and all other odd ball equipment and I always see the label say "100~240v AC". Dell's old rack mount monitor/KB from 5 years ago even supports 208v (Just wrong connector.)
The vast majority of power adapters are switching these days and will run up to 240, it's when they have built in NEMA 1-15 or 5-15 prongs that you have to overcome. ~Seth
Current thread:
- Want to move to all 208V for server racks Jay Nakamura (Dec 02)
- Re: Want to move to all 208V for server racks William Herrin (Dec 02)
- Re: Want to move to all 208V for server racks Ingo Flaschberger (Dec 02)
- Re: Want to move to all 208V for server racks Jay Nakamura (Dec 02)
- Re: Want to move to all 208V for server racks Seth Mattinen (Dec 02)
- Re: Want to move to all 208V for server racks Ingo Flaschberger (Dec 02)
- RE: Want to move to all 208V for server racks Alex Rubenstein (Dec 02)
- Re: Want to move to all 208V for server racks Jay Ashworth (Dec 02)
- Re: Want to move to all 208V for server racks Leo Bicknell (Dec 02)
- Re: Want to move to all 208V for server racks Owen DeLong (Dec 02)
- Re: Want to move to all 208V for server racks Kevin Day (Dec 02)
- Re: Want to move to all 208V for server racks Jay Ashworth (Dec 02)
- Re: Want to move to all 208V for server racks Ingo Flaschberger (Dec 02)
- Re: Want to move to all 208V for server racks Ingo Flaschberger (Dec 02)
- Re: Want to move to all 208V for server racks Kevin Day (Dec 02)
- Re: Want to move to all 208V for server racks Jay Nakamura (Dec 02)