Winnie, That was a very informative post.had not thought about harmonics playing a role in it. I was just sitting here going through it again in my head, and am kicking myself. Of course it could be on A-C, cant beleive I was thinking that it couldn't. I was quite sure I had identified A-B, but your right it makes more sense that it was C-A. I am going back tommorrow, we are putting in another 3 ph panel for some kitchen equipment, I will verify the phases in question. Thanks everyone for your input.
Gary
