Yet Another Lathe Wiring Issue/ Question

Ok gents, it works, I wish to say thank you for you guys staying with me here and helping to the end. You saved me a pile of cash so in passing it forward I will make a donation to this website again. 1 more question. How do i know if its a 2 or 4 pole motor and does it matter that much on vfd programming?
 
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One of the ways you can tell how many poles is the motor rated RPM. At 60Hz a 2 pole motor will run at 3600 nominal (3450), a 4 pole motor will run at 1800 nominal (1725), a 6 pole will run at 1200 nominal (1100 or so), and an 8 pole at a nominal 900. Sometimes the motor will have the number of poles stated on the data tag.

A 2 speed motor may be a 2/4 pole depending whether it's connected hi or lo or a 4/8 or some combination depending on how its wired.

Many VFDs want to know the number of poles, but I'm not sure exactly why. Maybe someone can explain that one.
 
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