Simply put, the ground wire is a way of electrical protection. Its function is to quickly introduce the current into the ground through the ground wire when your electrical equipment leaks or is inductively charged, so that the equipment shell is no longer charged, thus ensuring the safety of the equipment after personnel.
For example, due to poor insulation performance of household electrical equipment or a humid environment, the shell of the household electrical equipment will have a certain amount of static electricity, and an electric shock accident may occur in severe cases. In order to avoid accidents, you can connect a wire on the metal casing of the electrical appliance, and connect the other end of the wire to the ground. Once the electrical appliance leaks, the ground wire will bring static electricity into the ground and release it. In addition, it is more important for electrical maintenance personnel to break down and damage the integrated circuits in the electrical appliances when the electrical soldering iron is used to weld the circuit. Friends who use computers sometimes ignore the grounding of the main chassis. In fact, connecting the main chassis of the computer to the ground wire can prevent the occurrence of crashes to a certain extent.
