ECN Forum Forums General Topics of the Trade General Discussion Area Wye or Delta?

I am surprised nobody mentioned the size of the transformers. If you look at the pole that feeds the building and the bank of transformers has one thats larger than the other two or two transformers with one larger than the other it's a 240/120 delta. Three pots of the same size...wye. Always test to be sure but different size transformer pots screams high leg.