Thanks Aiph5u!
I’ve since purchased a bus bar and some copper grounding strap. I mounted the bar inside the cabinet and connected it directly to the ground in my garage’s electrical panel. I then grounded the rear two Y-axis feet, controller enclosure, and the shielding going to my spindle (on the VFD side) using separate grounding straps (star). Before I mounted the bus bar/straps today, the shielding was connected to the same terminal as my spindle ground at the VFD. It’s now going straight to the bus bar.
So I guess I have three grounding unknowns:
- Should I ground the other end of the shielding (spindle end) to one of the top bolts of the spindle or not connect it to anything like it is now?
- Should I wrap a wire spiraling around the outside of my dust collection hose/separator and run it to ground? What about the vacuum itself (it isn’t pictured, but it’s in the same cabinet)?
- How do I ground the VFD? The two screws visible at the bottom of the VFD pic don’t have any continuity to ground or to each other…
I haven’t fired it up yet since I installed the bus bar.
