[114774] in North American Network Operators' Group
RE: Why choose 120 volts?
daemon@ATHENA.MIT.EDU (Aaron Wendel)
Tue May 26 16:48:44 2009
From: "Aaron Wendel" <aaron@wholesaleinternet.net>
To: <nanog@nanog.org>
In-Reply-To: <4A1C455E.5080103@rollernet.us>
Date: Tue, 26 May 2009 15:46:59 -0500
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Our power is handed to us at 480v. We then deliver it to the customer =
at whatever they need. The nice thing about 120v is that everything =
uses it. No odd cords (as mentioned before) or expensive PDUs.
I've had a lot of people suggest that running our servers at 240v would =
save us money because we'd use less amps. Last time I looked at my bill =
I was being billed by the kWh, not amp and 240v at half the amps is =
still the same wattage. I've been told this so many times though that =
I'm starting to doubt myself. If anyone can present a reason for me to =
switch to 240v I'd like to hear it.
Aaron
-----Original Message-----
From: Seth Mattinen [mailto:sethm@rollernet.us]=20
Sent: Tuesday, May 26, 2009 2:39 PM
To: nanog@nanog.org
Subject: Why choose 120 volts?
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
