This application guide summarizes usual methods of grounding of generator systems, and discusses considerations in applying each grounding method to various types of generator systems. The guide applies to generator systems operating at 11 kv and above, but in general, it is also applicable to generator systems operating at voltages below 11 kv. In preparing the guide, the Committee recognized that some suggestions and recommendations are in conflict with the grounding practices utilized successfully by some operating companies. It should be borne in mind, however, that the report is intended solely as a guide and its recommendations and suggestions are necessarily of a general nature and cannot take into account the special requirements of any specific situation