Randy,
From your description, it sounds like you don't have 3-phase power going to the motor. The clue is that you are measuring 120V across some of the wires. You should be seeing 240V between all of the wires coming from the wall. What you are describing is what you would get from standard 240V single phase with a neutral.
I don't know if you are in an industrial setting, but 3-phase power in a residence would be very unusual.
Best of luck.
Glen Zoerner
Spicewood, TX
From your description, it sounds like you don't have 3-phase power going to the motor. The clue is that you are measuring 120V across some of the wires. You should be seeing 240V between all of the wires coming from the wall. What you are describing is what you would get from standard 240V single phase with a neutral.
I don't know if you are in an industrial setting, but 3-phase power in a residence would be very unusual.
Best of luck.
Glen Zoerner
Spicewood, TX