There are a number of good reasons to ground but primary among them is to ensure personnel safety. The following agencies and organizations all have recommendations and / or standards for grounding, to ensure that personnel safety is being protected. The organizations that provide guidelines/rules for grounding are: The International Electrotechnical Commission (IEC), European Committee for Electrotechnical Standardization (CENELEC), Underwriters Laboratories (UL), National Fire Protection Association (NFPA), American National Standards Institute (ANSI), Mine Safety Health Administration (MSHA), Occupational Safety Health Administration (OSHA), Telecommunications Industry Standard (TIA) and others. Good grounding is not only for the safety of personnel but to provide for the protection of plants and equipment. A good ground system.