nanog mailing list archives
RE: Why choose 120 volts?
From: "Dave Larter" <dave () stayonline com>
Date: Tue, 26 May 2009 19:58:18 -0400
Yes, you are correct Chris. The loss from getting 240 from two legs is due to the fact that it is at 120 instead of 180 deg's. -----Original Message----- From: Chris Adams [mailto:cmadams () hiwaay net] Sent: Tuesday, May 26, 2009 7:52 PM To: Joe Greco Cc: nanog () nanog org Subject: Re: Why choose 120 volts? Once upon a time, Joe Greco <jgreco () 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). You need a NEMA 14 (4 wire) connector to get two phases, neutral, and ground (provides 1 208V circuit and/or 2 120V circuits) or a NEMA L21 (5 wire) connector to get all three phases, neutral, and ground (provides 3 208V circuits and/or 3 120V circuits). -- Chris Adams <cmadams () hiwaay net> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.
Current thread:
- Re: Why choose 120 volts?, (continued)
- 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)
- Re: Why choose 120 volts? Chris Adams (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? Dave Larter (May 26)
- Re: Why choose 120 volts? Seth Mattinen (May 26)
- Re: Why choose 120 volts? david raistrick (May 26)
- Re: Why choose 120 volts? Joe Greco (May 26)
- Re: Why choose 120 volts? david raistrick (May 27)
- RE: Why choose 120 volts? Dave Larter (May 27)
- Re: Why choose 120 volts? Joe Greco (May 27)
- Re: Why choose 120 volts? Pete Templin (May 28)
- RE: Why choose 120 volts? Dave Larter (May 28)