Paul,
What I see agrees with the above postings. I don't see too many "High Leg" Deltas, but most of the ones I see should be changed as the buildings' occupants have changed from industrial to commercial (sales) and no longer have much need for 3 phase equipment. They usually bypass the high leg altogether (except for occassional errors) which gives them a very unbalanced service, and doesn't let them use the full capacity.
Bill
