1. Tighten the wiring with moderate force to prevent bolts and nuts from slipping due to excessive force. If it is found that there are slipping bolts and nuts to be replaced in time, it is forbidden to operate;

2. When screwing or unscrewing the screw with a screwdriver, it is necessary to screw the screw with force, and then screw or loosen it to prevent the screwdriver from slipping off with the screw and being difficult to disassemble, especially in the hanging box;

3, found that the bolt and nut is difficult to remove, don't make a move, in order to prevent deformation is more difficult to remove, should give appropriate knock, or add screw loosening agent, dilute hydrochloric acid, etc. Remove later;

4. Don't tighten or loosen bolts and nuts with a vise to avoid damage. Adjust the opening when using the adjustable wrench to prevent the bolt and nut from being damaged and deformed, which is not easy to disassemble;

5, the same terminal allows at most two wires of the same model and specification;

6. For terminals that are easy to loosen or have poor contact, the wire connector must be marked with "?". T-shape is fastened on the terminal to increase the contact area and prevent looseness;

7. When wire connectors or wire noses are connected to each other, it is forbidden to install non-copper or non-conductive gaskets in the middle;

8. When connecting the wire connector, the contact surface should be smooth and free of oxidation. When connecting the nose or copper bar, clean the contact surface and apply conductive paste, then tighten it;

9. When connecting temporary wires, the joint of a single wire should be folded in half once, and then opened. Single-core hard wire should be "?" T-shaped connection with the empty opening;

For the wiring of motors of 10, 30KW or above, it is required that gaskets with poor conductivity, such as galvanized nuts, flat pads and spring pads, are not allowed to pass between the motor outlet and the cable connecting the motor;

1 1. When winding cables or other equipment with insulating tape to protect insulation, the insulating layer should be wound from one end to the other at least once according to the ratio of 1/2.