The grounding wire is the sheath of yellow-green double-color wire. Grounding wire is a wire connected to the earth, shell or zero reference potential in electrical system or electronic equipment. In general electrical appliances, the ground wire is connected to the shell to prevent electric shock accidents caused by insulation damage inside the shell. The symbol of the ground wire is e (ground wire); It can be divided into power grounding wire and circuit grounding wire. According to China's current standards, when the third item in GB268 1 marks the circuit according to the conductor color, it should generally be the phase line-A phase yellow, B phase green and C phase red. Zero line-light blue, ground line is yellow-green. If it is three hole socket, the left is the zero line, the middle is the ground line (above), and the right is the live line. Extended data:
Ground wire is short for grounding device. Grounding wire is divided into working grounding and safety grounding. In order to prevent people from getting an electric shock when using household appliances, office and other electronic equipment, protective grounding is a kind of safe grounding wire.