If at all possible, always check the motor to see if there is a plate on it that gives you the directions for wiring the motor. The diagram that was shown is very good and accurate, however, I once, and only once, encountered a Westinghouse 75 HP 3ph motor that had a different wiring????? Don't know why but as I was wiring it up I happened to look at the diagram and got confused. Looking at it the second time I realized it was different.. Don't know why and have never seen it since.