It is often heard that people around you refer to all types of wires and cables as cables, and power cables are also unified. Actually, this is incorrect. There are many differences between cables and wires in terms of standards, planning, uses, and characteristics, so the two should not be confused. 1. The difference between materials Electrical wire A conductive metal wire used to carry electrical current. There are various forms such as solid stranded or foil woven. According to the insulation status, it is divided into two categories: bare wire and insulated wire. A cable consists of one or more insulated conductors with conductive cores placed in a sealed sheath. A protective covering can be added. The difference between wires and cables is that the standard of the wire is generally smaller. The design is relatively simple, but sometimes the cable is also classified as a generalized wire.
2. The difference in use Bare wires are wires that are not covered with any insulation or protection. In addition to being used as a wire for transmitting electrical energy and information, it can also be used to manufacture electrical components and connecting wires. Generally, copper, aluminum, copper alloy and aluminum alloy are used. In addition, there are all kinds of insulated wires suitable for special needs. Such as low-voltage wires for cars in front of high-voltage points for cars, lead wires for motors and electrical appliances, and compensation wires for aviation wires. Cables are used to transmit, distribute electrical energy or transmit electrical signals. Cables can be divided into power cables, communication cables and control cables according to their uses.
3. Differences in planning The difference between power cables and general wires is that the cable standard is larger and the planning is more complicated. The cable mainly consists of the following four groups. Conductive core: Made of high conductivity material. Insulation layer: The insulating material used as a cable should have high insulation resistance. High breakdown electric field strength. Cables are often classified by insulating material.
In addition to the above differences, cables have distinct advantages. Compared with overhead lines. The advantage of the cable is that the insulation interval between the lines is small. It occupies a small space. It is laid underground without occupying the space above the ground. Therefore, cables are mostly used in densely populated areas with dense power grids and heavy traffic jams. It plays an important role in the modernization construction.
To put it simply: power cables generally refer to outdoor overhead cables or outdoor overhead bare wire cables, and wire cables generally refer to rubber sheathed cables or cables that temporarily use electricity.
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