When measuring voltage from ground to each leg on a 240 volt 3 phase circuit what ahould be your volt readings on each leg?

To answer some of your questions, it is a 3phase3wire setup, we have a central bus running across the plant that supplies the presses. But I dont know which leg to come off to get my 120 volts?

[This message has been edited by Mustang (edited 06-14-2002).]