1. Purpose code-not marked as power cable, K is control cable, P is signal cable;

      2. Insulation code-Z oil-impregnated paper, X rubber, V polyvinyl chloride, YJ cross-linked polyethylene

      3. Conductor material code-L is aluminum;

      4. Inner sheath code-Q lead package, L aluminum package, H rubber sleeve, V polyvinyl chloride sheath

      5. Derived code-D does not drip, P is dry insulation;

      6, outer protective layer code

      7. Special product code-TH wet tropics, TA dry tropics;

      8. Rated voltage-unit KV

      What are the types of commonly used wires and cables according to their purpose? Answer: According to the purpose, it can be divided into bare wires, insulated wires, heat-resistant wires, shielded wires, power cables, control cables, communication cables, radio frequency cables, etc.

      Common insulated wires include the following types: PVC insulated wires, PVC insulated cords, and nitrile-polyvinyl chloride composite insulated cords.