The concept of wires and cables and the distinction between wires and cables:
power cable It refers to materials used for power, communication and related transmission purposes. There is no strict boundary between "wire" and "cable". Generally, products with few cores, small diameter and simple structure are called wires, those without insulation are called bare wires, and others are called cables; The conductor with large cross-sectional area (more than 6 mm2) is called large wire, the smaller one (less than or equal to 6 mm2) is called small wire, and the insulated wire is also called Wiring 。
Wires and cables mainly include bare wires, electromagnetic wires, insulated wires for motors and electrical appliances, power cables, communication cables and optical cables. Wire and cable naming:
The complete naming of wires and cables is usually complicated, so people sometimes use a simple name (usually a category name) in combination with the model and specification to replace the complete name. For example, "low-voltage cable" represents all plastic insulated power cables of 0.6/1kV class. The type spectrum of wires and cables is relatively complete. It can be said that as long as the standard models and specifications of wires and cables are written, specific products can be identified. But what is its complete name?
The naming of wire and cable products has the following principles:
1. Contents included in the product name
(1) Name of product application or size category
(2) Product structure material or type
(3) Important or additional features of the product
The names are basically in the above order. Sometimes, in order to emphasize important or additional features, the features are written before or before the corresponding structure description.
2. Sequence of structure description
The product structure is described from inside to outside: conductor -->insulation -->inner sheath -->outer sheath -->armored type.
3. Simplification
In case of no confusion, some structural descriptions are omitted or abbreviated. For example, aluminum conductors are not allowed to be used in automobile wires and flexible wires in power cables, so conductor materials are not described.
