what is a high leg on a transformer?

A high leg on a transformer refers to the phase conductor that carries a higher voltage compared to the other two phases in a three-phase delta-wye (?-Y) transformer configuration. In a typical 120/240V split-phase system, the high leg is often designated as the “wild leg” and is usually around 208V to ground. It is important for balancing loads and ensuring proper voltage distribution in electrical systems.