The wire is used to carry a current-conducting metal wire. There are various forms such as solid, stranded, or foil braided.
According to the insulation condition, it is divided into two categories: bare wire and insulated wire.
The cable consists of one or more insulated conductors that are insulated from each other and placed in an insulated conductor formed in a sealed jacket.
The protective cover layer can be added outside.
The difference between the wire and the cable is that the wire is generally small in size and simple in structure, but sometimes the cable is classified into a generalized wire.
Bare wires do not contain any wires that are insulated or protected.
In addition to being used as a conductor for transmitting electrical energy and information, it can also be used to manufacture components and connect wires for motors and appliances.
Generally, copper, aluminum, copper, and aluminum alloy are used.
In addition, there are various insulated wires suitable for special requirements, such as low-voltage wires for automobiles, high-voltage ignition wires for automobiles, pilot wires for electrical appliances, aviation wires, and compensation wires.
Cables are used to transmit, distribute, or transmit electrical signals.
Cables can be classified into power cables, communication cables, and control cables according to their uses.
The difference between power cables and ordinary wires is mainly due to the large cable size and complicated structure.
The cable is mainly composed of the following four groups.
Conductor core: Made of high-conductivity material.
Insulation: The insulating material used as the cable should have high insulation resistance and high breakdown electric field strength.
Insulating materials often classify cables.
In addition to the above differences, cables have significant advantages.
Compared with the overhead line, the advantage of the cable is that the insulation distance between the lines is small, the floor space is small, the underground is laid without occupying the area above the ground, and is not affected by the surrounding environmental pollution.
The power transmission reliability is high, and personal safety and the surrounding environment are disturbed. small.
Therefore, cables are used in densely populated and densely populated areas and in heavy traffic.
It has a role to play in modernization.