Differentiation between wires and cables

Wire and cable refer to materials used for power, electrical and related transmission purposes. There is no strict boundary between "wire" and "cable". Generally, the products with small number of cores, small diameter and simple structure are called wires. The ones without insulation are called bare wires, and the others are called cables. Larger conductor cross-section (more than 6 mm2) is called large wire, smaller conductor cross-section (less than or equal to 6 mm2) is called small wire, and insulated wire is also called cloth wire.

Wire and cable type

Wire and cable mainly include bare wire, cloth wire and power cable for electrical equipment, cross-linked cable and communication optical cable.

Cable model code

1. Purpose code - not marked as power cable, K is control cable, P is signal cable; 2. Insulation code - Z oil-immersed paper, X rubber, V polyvinyl chloride, YJ cross-linked polyethylene; 3. Conductor material code - not marked as copper, L as aluminum; 4. Internal protective layer code - Q lead package, L aluminum package, H rubber sleeve, V polyvinyl chloride sheath; 5. Derivative code - D does not drip, P dry insulation; 6. Code of outer protective layer; 7. Special product code - TH wet tropical zone, TA dry tropical zone; 8. Rated voltage - in KV.

Application scope of wires and cables

Power system; The adopted wire and cable products mainly include overhead bare wire, busbar (bus), power cable (plastic cable, oil-paper power cable (basically replaced by plastic power cable), rubber sheathed cable, overhead insulated cable), branch cable (replacing part of bus), electromagnetic wire and electric equipment wire and cable for power equipment. Information transmission system; The wires and cables used for the information transmission system mainly include local telephone cables, television cables, electronic cables, radio frequency cables, optical fiber cables, data cables, electromagnetic cables, power communication cables or other composite cables. Mechanical instrument system; This part is applied to almost all other products except overhead bare wires, but mainly power cables, electromagnetic cables, data cables, instrument cables, etc.