1： The difference between wires and cables
A flexible wire consisting of one or more wires covered with a soft sheath, and a cable consisting of one or more insulated wires covered with a tough metal or rubber sheath.
Electric wires are generally conductive metal wires used to carry electrical current. There are various forms such as solid, twisted, or foil woven. Divided into two categories based on insulation condition: bare wires and insulated wires.
A cable generally consists of three parts: core wire, insulation sleeve, and protective sleeve. It is an insulated wire composed of one or more mutually insulated conductive cores placed in a sealed sheath. It can be covered with a protective layer for transmitting, distributing electrical energy or transmitting electrical signals.
Each wire of the cable can be considered as a strand of wire. This is the most direct difference between wires and cables. The main difference between it and ordinary wires is that the cable size is larger and the structure is more complex.
The difference between wires and cables is that wires are generally smaller in size and simpler in structure, but sometimes cables are also classified as general wires.
The difference between the two can also be introduced from the following three aspects:
01
Difference in materials
A wire is a metal wire used for conducting electricity and transporting electrical current. They come in various forms, such as solid, twisted, or metal foil woven. Insulated metals are divided into two categories: bare wires and insulated wires. An insulated wire composed of one or more insulated wire cores placed in a sealed sheath. The difference between wires and cables is that wires are generally smaller in size and simpler in structure, but cables are sometimes classified as general wires.
02
Differences in structure
The difference between cables and ordinary wires lies in the large size and complex structure of cables. Cables are mainly made of conductive wire cores (highly conductive materials), and the insulation layer used as cable insulation material should have high insulation resistance and high breakdown electric field strength. Cables are usually classified as insulation materials.
03
Difference in usage
Bare wires are wires that do not have any insulation or protective layer. In addition to being used as wires for transmitting electrical energy and information, they can also be used to manufacture components and connecting wires for motors and electrical appliances. In addition, there are various insulated wires suitable for special requirements, such as low-voltage wires for automobiles, high-voltage ignition wires for automobiles, lead wires for electric motors, aviation wires, compensation wires, etc. According to their usage, cables can be divided into power cables, communication cables, and control cables.
In addition to the above differences, cables also have obvious advantages. Compared with overhead lines, the advantages of cables are small insulation distance between lines, small footprint, underground laying that does not occupy development space above ground level, and high transmission reliability. Therefore, most cables are used in densely populated, power grid intensive areas and crowded places, and they play an important role in modernization construction.
2： What is the difference between wires, cables, and harnesses
1. Wire and cable are wire products used to transmit electrical (magnetic) energy, information, and achieve electromagnetic energy conversion. Broadly speaking, wire and cable are also referred to as cables, and narrowly defined as insulated cables, which can be defined as a collection of the following components:; One or more insulated wire cores, as well as their respective protective layers, total protective layer, and outer protective layer, may also have additional uninsulated conductors in the cable. Wire products used for transmitting electromagnetic energy, information, and achieving electromagnetic energy conversion.
Broadly speaking, wires and cables are also referred to as cables, while narrowly defined cables refer to insulated cables. A collection consisting of one or more insulated wire cores, as well as their respective possible cladding layers, total protective layer, and outer protective layer. The cable may also have additional uninsulated conductors.
The main features of this type of product are: a wide variety of specifications, a wide range of applications, and a high usage voltage of 1kV and below. In the face of special occasions, new products are constantly emerging, such as fire-resistant cables, flame-retardant cables, low smoke halogen-free/low smoke low halogen cables, anti termite, anti mouse cables, oil resistant/cold resistant/temperature resistant/wear-resistant cables, medical, agricultural, mining cables, thin-walled wires.
2. The wiring harness provides the overall service equipment for a certain load source group, such as relay lines, switching devices, control systems, etc. The basic research content of call theory is to study the relationship between call volume, call loss, and harness capacity. Therefore Wiring harness is an important fundamental concept in telephone communication theory.
The load source is the service object of the wiring harness, referring to the user equipment; The upper level device is the load source of the lower level device. The capacity of this harness is V, providing services for N load sources. Any load source that makes a call can occupy an idle service device in the wiring harness.
