The so-called grounding refers to the electrical connection between a certain part of the electrical equipment and the soil. In order to ensure the normal operation and safety protection of electrical equipment, grounding must be carried out. In order to successfully ground electrical equipment, grounding devices have to be used. The grounding device mainly includes grounding wire and grounding body. The grounding body is a metal body used to contact the soil directly; The grounding wire is the wire used to connect the grounding body and electrical equipment.