1, classification
Used to transmit the electricity (magnetic) energy, information and implementation of electromagnetic energy conversion products collectively referred to as wire and cable wire. By use of different wire and cable can be divided into five categories:
Bare wires: the only conductor without insulation products, such as ACSR, aluminum stranded wire, copper strands. Products are mainly used in the suburbs, rural areas, the user theme, switch cabinets and so on.
Winding wire (magnet wire): in order to winding in the form of cutting magnetic field lines in a magnetic field sensor produces current, or current-generated magnetic field pass to the wire, mainly used for a variety of electrical, instrumentation and so on. Such as the enameled wire.
Power Cable: In the backbone of power system transmission and distribution lines for high-power electric cable products, such as cross-linked polyethylene insulated power cables. Products are mainly used in hair distribution, transmission, variable, power lines in the strong electric power transmission, through the current large (tens of thousands of security to security), high voltage (220V to 500kV and above).
Communication cable and optical cable: transmit telephone, telegraph, television, radio, fax, data and other information, telecommunications cables, fiber optic cable.
Electrical equipment, wire and cable: From the point of distribution power system to power directly to a variety of electrical equipment, appliances, power lines used to connect the wire and cable. Such as control cables, wire cloth and so on.

2, wire and cable applications
Power Systems: Power system used in wire and cable products are mainly bare overhead wires, bus (bus), power cable (plastic cable, oil-paper power cable (basic power cables have been replaced by plastic), rubber-sheathed cables, overhead insulated cable) , branch cable, wire and electrical equipment with electrical equipment such as wire and cable.
Information Transfer System: for information transmission systems are mainly wire and cable telephone cable, TV cable, electronic cables, RF cables, optical cables, data cables, wire, electrical communication or other composite cables.
Mechanical equipment, instrumentation systems: In addition to overhead wires, bare almost all other products are applied, but the main electricity cables, magnet wires, data cables, instrumentation cables.

3, the basic structure of wire and cable
Conductor: conduction current objects, wire and cable specifications are indicated by the conductor cross-section.
Insulation: The insulation withstand voltage levels according to their requirements, with different cladding thickness of the conductor formed outside.