Thanks to all those who responded to my earlier posts regarding my South bend 16 lathe. Your steering me in the right direction and I really appreciate it.
I did get a Teco VFD from Dealers Electric. They were very knowledgeable with the wiring of my 3 phase motor. I'd recommend them to anyone too!
I hooked it up today and it worked just as promised. The motor is not in the lathe but on my bench. I wired it just to make sure everything worked right. I love the variable speed control you get with the VFD.
The manual recommends a ground going directly to earth from the VFD. This is to avoid radio interference. I'm a bit uncomfortable doing that. I was always under the impression that you should only have one ground from your main panel. That's why all my subpanels are not grounded individually but are grounded back to the main. Any thoughts on this?
Also, I need to wire my garage now for 220V. Can anyone tell me if 12 gauge wire with a 20AMP breaker is adequate for this setup or should I go to 10 Gauge with a 30 Amp breaker? I am leaning towards the 20 Amp setup.
Motor is a GE 3HP 3 Phase 460V 1800 RPM and is wired through the Teco which is running on 220 Volts.
Thanks in advance for the help.
Ted