Why choose 120 volts?

Dave Larter dave at stayonline.com
Tue May 26 19:23:42 CDT 2009


See:

http://www.3phasepower.org/3phasewiring.htm

-----Original Message-----
From: Joe Greco [mailto:jgreco at ns.sol.net] 
Sent: Tuesday, May 26, 2009 8:20 PM
To: Chris Adams
Cc: nanog at nanog.org
Subject: Re: Why choose 120 volts?

> Once upon a time, Joe Greco <jgreco at ns.sol.net> said:
> > And I don't like not having anywhere to plug in my power
screwdriver's
> > recharger...  I suppose I should see if I can find someplace that
has
> > a transformer of an appropriate size, or does anyone already have
the
> > part number for something that can provide a few hunderd milliamps
of
> > 120V from 208?  :-)
> 
> Isn't 208V usually provided as a connection across two phases of a 3
> phase circuit?  In that case, you get 120V by going between one phase
> and neutral (no transformer required).

Yes, but this doesn't imply that you have access to those other phases.
It is easy enough to be delivered 208V single phase service in a data
center environment.

... JG
-- 
Joe Greco - sol.net Network Services - Milwaukee, WI -
http://www.sol.net
"We call it the 'one bite at the apple' rule. Give me one chance [and]
then I
won't contact you again." - Direct Marketing Ass'n position on e-mail
spam(CNN)
With 24 million small businesses in the US alone, that's way too many
apples.





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