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:[email protected]] Sent: Tuesday, May 26, 2009 7:52 PM To: Joe Greco Cc: [email protected] Subject: Re: Why choose 120 volts? Once upon a time, Joe Greco <[email protected]> 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 <[email protected]> Systems and Network Administrator - HiWAAY Internet Services I don't speak for anybody but myself - that's enough trouble.
