Thanks, guys. Sorry about not understanding the first time about the zig-zag transformer, Bjarney. I thought the link was to something other than a zig-zag transformer.
Am I understanding correctly that elecbobs diagram is correct, except the 12 o'clock position to ground is 208 volt? I believe this is a typical configuration for our POCO with two pole mounted transformers.
I'll check out that APC site some more, but I belive it's for 480 volt. The more I read on this, the more I think this should be going to an electrical engineer. This is over my head and I like working from experience. It has, however been very educational.
Dave
