In a high leg delta system, the B phase bus bar in a panel is supposed to be identified somehow, like orange or red in color, to indicate that something is different, and not to install a 1-Pole circuit breaker on phase B.
I'll try posting a graphic from the link Robbie gives.
Radar
Edited for spelling (duh)
[This message has been edited by Radar (edited 02-02-2006).]
There are 10 types of people. Those who know binary, and those who don't.