Wire and cable equipment manufacturers explain common knowledge of cables - there must be something you don't know

For beginners, wires and cables are always a little unclear for them to distinguish. The wire refers to the wire that conducts current, which can effectively conduct current and is the carrier used for conducting electrical energy. Cable is a wire product used to transmit (magnetic) energy, information and realize electromagnetic energy conversion. Wire and cable equipment manufacturers believe that it is usually composed of several or several groups of wires, which are divided into: power cable, control cable, compensation cable, shielding Cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, etc.

What is the difference between wire and cable?

1. The wire is composed of one or several soft wires, covered with a light and soft sheath; the cable is composed of one or several insulated conductors, which are then covered with a tough outer layer made of metal or rubber. Cables and wires are generally composed of three parts: core wire, insulating sheath and protective sheath. In fact, "wire" and "cable" do not have strict boundaries. Usually, products with few cores, small product diameter and simple structure are called wires, those without insulation are called bare wires, and others are called cables. The conductor with a larger cross-sectional area (greater than 6 square millimeters) is called a large wire, the smaller one (less than or equal to 6 square millimeters) is called a small wire, and the insulated wire is also called a cloth wire.

2. The cables generally have more than 2 layers of insulation, most of which are multi-core structures, which are wound around the cable reel, and the length is generally greater than 100 meters. The wire is generally single-layer insulated, single-core, 100 meters in a roll, and has a wireless reel.

3. The smaller diameter is called "wire"; the larger diameter is called "cable".

4. The simple structure is called "line"; the complex structure is called "cable".

However, with the expansion of the scope of use, many varieties have "cable in wire" and "wire in cable". So there is no need to strictly distinguish. In daily habits, people call household cloth wires wires, and power cables are referred to as cables.

The current situation of the wire and cable market?

In the past ten years, China's wire and cable industry has made great progress, and with an industry output value of 1.1 trillion yuan, it once surpassed the United States and ranked first in the world. At present, the global wire and cable market has exceeded 100 billion euros. In the global wire and cable industry, the Asian market accounts for 37%, the European market is close to 30%, the American market accounts for 24%, and other markets account for 9%.

With the continuous advancement of my country's power grid smart grid construction and the corresponding rural grid transformation and upgrading projects, the actual construction stage has come, and the development of the domestic wire and cable industry has also ushered in development opportunities. At present, the technical strength of my country's cable industry is not very strong, and it is inferior to similar foreign products in many aspects.

1. Regional: Asia-Pacific, South America, the Middle East and Africa and other regions where developing countries are concentrated have become several regional markets with fast growth in the wire and cable market due to the acceleration of the industrialization process and the increase in the demand for reconstruction and expansion of power transmission and distribution networks. Among them, the Asia-Pacific market will become a regional market with large demand.

2. Scope of end-use applications: Infrastructure construction, industry and renewable energy are the three main end-use markets.

3. In terms of demand: the demand in the wire and cable market continues to expand. For related wire and cable manufacturers, only by firmly occupying the power distribution market can the foundation for high-end product research and development be consolidated; only by having high-quality and inexpensive wire and cable products can they obtain favored by the market and users.