> Just courious, what is 'wye' ? Hi Tal, Wye takes one leg of each phase and connects to neutral, so you have three "hot" legs and one neutral in the center. Sort of like the letter "Y". Delta connects the three phases in a loop. Neutral is usually the center tap of one phase, or one corner sometimes. Cheers, Bob -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.