aka Y. Method of connecting to a transformer. Most often used on the stage with a five wire system: Hot1, Hot2, Hot3, Neutral, and Ground. In a 120/208VAC, 3Ø Wye-connected system, the voltage between any two hots is 208, and between any hot and neutral, 120V. Voltage between neutral and ground should be zero. Drawing courtesy of wye (Y) connection: Information from Answers.com. See also Delta connection.