VFD Cable and 2.2kw spindle wiring

[Flamered]

I thought the same until I got a shock off it. It's not good practice to rely on bearings to transmit the fault current to earth so I would always advise using 4-core cable to include an earth connection just by the spindle. The cost it's negligible - just one tapped hole in the Z-axis plate to screw the wire on to and you're done. It also adds a bit of redundancy to the system.

Thanks for the help!

I need a little clarification on some of your instructions. I have no clue about electrics apart from wiring up a plug!!

- earth connection just by the spindle -
Do you mean attaching the earth to the z-axis? Only mine is made of MDF, although it has a strip of angle iron which holds part of the carriage. Would it need to be attached to the angle iron.

-just one tapped hole in the Z-axis plate to screw the wire on to -
So the cable attaches to the spindle! How do i get the wire to do this, do i need to leave the earth out of the plug that attaches to the spindle.

Do you have any pictures that would make things 100% crystal clear for someone like me.

Appreciate your help, as its taken me 4 months to get to this point. Its all moving just need to work out the homing and start making splinters

Cheers
Stephen (Bristol)