Im a Newbie here......I just finished building my CNC Plasma Table. The table is sitting in my garage. My garage is 1600 square feet of concrete floor. Outside of the shop is also surounded by concrete. Im not sure how to go about grounding my CNC Plasma Table. I have thought about drilling a hole in the concrete and pounding a grounding rod into the floor? If so how deep do I need to go? Any Ideas? Can I ground it to a ground wire on an electrical socket going back to the fuse pannel in my home? How important is it to ground these tables? Is it a saftey issue or more to protect the electronics? Im sure many of you have ran into this same issue.....Any help would be appreciated.