Joe Greco wrote: >> 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). > > 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
Correct. I have a Smart-UPS RT connected across two legs of 3 phase for 208. The unit does not have a neutral, only ground, so it's 3 wires in and 3 out. The output is only 208 L-L with odd voltages on L-G. Since there's no neutral, it can only be used to drive 208 loads or a transformer for 120. ~Seth
