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1. What types of commonly used wires and cables are used according to their purposes? A: According to the use, it can be divided into bare wire, insulated wire, heat-resistant wire, shielded wire, power cable, control cable, communication cable, RF cable, etc.

2. What kinds of insulated wires are there? Answer: There are commonly used insulated wires: polyvinyl chloride insulated wire, PVC insulated wire, nitrile polyvinyl chloride mixture insulated cord, rubber insulated wire, agricultural underground direct buried aluminum core plastic insulated wire, rubber insulated cotton yarn Textile cords, PVC insulated nylon sheathed wires, PVC insulated cords for power and lighting, etc.

3. What kind of occasion is the cable tray suitable for? Answer: The cable tray is suitable for laying power cables and control cables indoors and outdoors in general industrial and mining enterprises. It can also be used for erection indoors and outdoors in telecommunications, radio and television departments.

4. What are the cable accessories? Answer: Commonly used electrical accessories include cable terminal junction box, cable intermediate junction box, connecting pipe and terminal block, steel plate wiring slot, cable tray and so on.

5. What is the cable intermediate connector? Answer: The device that connects the cable and the conductor of the cable, the insulating shield and the protective layer to connect the cable line is called the cable intermediate connector.