First steel diy CNC router build

[Clive S]

I am at a point, where pretty much everything mechanic is finished.
I am building my CNC in garage, and I only just realised that there is no earth wire coming from electric box, there are only phase and neutral. Now I am quite stuck, do I have to dig in some peace of metal (quite impossible in that location), or do I just leave earth wires from spindle and PSUs untouched? Would it cause safety issues? The thing I am struggling the most, is where to connect common earth from all of the shields to? Any ideas how to approach this?
On the side note - how big fuses are you using for VFD+2.2kw Spindle and motors/drivers? I am planning to go 15A for spindle and 10A for drivers/steppers?

You do need an earth in your garage you will need to hammer an earth rod in the ground and connect it to and RCD type consumer unit this will then trip at 30mA and give you protection. An electrician would do this for you. The spindle will run from a 13A plug and the drivers from say 10A.

All the shields and earths in the control box should be connected to one point called a star point and then that point should be connected to the earth. The shields are generally connected at one end only, at the control box. Hope this helps ..Clive