The standard of copper clad steel wire in the wiring process is strictly used. The normal specifications of 3 plugs are: left zero line, right live line, and the ground above. If a wall plug with 3 plugs can be found outside the dormitory or corridor, it will be easy to do. If the wall plug of the dormitory has only 2 jacks, there will be no place to connect the ground. The zero line can never be connected to the ground.

The copper-clad steel stranded wire is made of a certain number of copper-clad steel single wires. It is widely used in the lightning protection grounding, anti-static grounding, protective grounding, and grounding wires of power and petrochemical systems in places such as high-frequency coaxial cable, steel network communication, electrified railway, subway light rail, railway, machine taste network communication, etc. Military covered wire conductor in application field; electric power industry grounding rod.

Copper clad steel wire is the grounding system of grounding wire. Exothermic welding is adopted for the connection between grounding conductor and grounding electrode. The basic operation procedure of this new type of grounding connection is very simple, that is, working grounding, protective grounding, lightning protection grounding and anti-static grounding are connected with computer grounding at the same time to form a common grounding network, so the grounding resistance value is required to be less than 1 Ω. If conventional galvanized flat steel and angle steel are used for construction, in order to make the grounding resistance meet the requirements, the number of grounding electrodes must be increased.