The first chapter presents the basic problems and dangerous situations in safety measures and grounding, and describes the circumstances that can cause electric shock. The second chapter lists the consequences of the action of electric current on the human body, the importance of the speed of fault clearing, and based on testing, the permissible values of current that the human body can withstand are presented. In the third chapter, using the Thevenin equivalent, we obtained more accurate methods for calculating touch voltage and investigated the influence of adding gravel on touch voltage or step voltage. The fourth chapter discusses the characteristics from the aspect of soil resistance, dependence on soil structure and moisture, and describes two methods of geoelectric sounding. The fifth chapter determines the maximum current of the earth electrode using a reduction factor. The sixth chapter discusses the design of the earth electrode, which is aimed at increasing the safety of step voltage and touch voltage, and its improvement. The seventh chapter discusses the issue of grounding the substation fence and measures to reduce touch voltage. Chapter 8 covers the subject of grounding system design, describing two common methods of grounding installation and safety considerations during subsequent excavations.