Generally a #6 copper conductor will do the job. The key to this grounding is that the ground conductor has to be taken back and connected to the service ground wire for optimal performance.
a table measures 1.52 meters wide and 2.74 meters long is the playing area. it is .254 m. thick w/ dark paint kile green.clear colored paint like white is painted along the sides and edges, 3-4 cm....
Your question really depends on your local codes and what exactly you are wiring. With out know your local codes, all I can suggest is that you either do some research for your city, county, and...