According to Article 8. 1.4 of Code for Grounding Design of Alternating Current Electrical Installations (GB/T50065-201), the general grounding terminal shall meet the following requirements: Item A, each equipment with protective connection shall be equipped with the general grounding terminal, and the following wires shall be connected: ① Protective connecting conductor (wire ② Grounding conductor (wire); ③PE (when PE has been connected to the general grounding terminal through other PE, each PE should not be directly connected to the general grounding terminal); ④ Item C, functional grounding conductor (wire). In item D, the conductors connected to the general grounding terminal shall be connected firmly and reliably, and can be disassembled separately.