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. It can be defined as 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, etc.
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, usually referring to the user equipment; Generally speaking, 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.