Is it a good idea to ground your welder to a grounding rod driven deep into the ground or connected to a copper water pipe. Also should ones steel welding table be grounded to the rod or water pipe. Then could your welding machine ground cable be connect to the same point on your table? Also I am woundering about transmission of high frequency through a building where there might be sensitive electronic equipment in use when one is TIG welding. What types of equipment might be effected and what could one do to minimize the effects or is there very little likelihood of a problem occuring. Thanks for your comments.