A grounding wire is a wire that directly connects to the Earth, also known as a safe return line. When in danger, it directly transfers high voltage to the Earth and is considered a lifeline. Due to poor insulation performance or humid usage environment, household electrical equipment can carry a certain amount of static electricity on its casing, which can lead to electric shock accidents in severe cases. To avoid accidents, a wire can be connected to the metal casing of the electrical appliance, and the other end of the wire can be connected to the ground. Once the electrical appliance experiences leakage, the grounding wire will bring static electricity into the ground and release it. In addition, it is important for electrical maintenance personnel to sometimes break down and damage the integrated circuit in the electrical appliance when using an electric soldering iron to weld the circuit. Friends who use computers sometimes overlook the grounding of the host case. In fact, connecting a ground wire to the computer host case can to some extent prevent the occurrence of crashes. Grounding wire in the power system is an important tool to ensure the safety of workers in the event of unexpected voltage on equipment and lines that have been cut off. According to ministerial regulations, the grounding wire must be made of bare copper flexible wire with a diameter of 25mm or more