Wires and cables belong to the electrical machinery and equipment manufacturing industry in the national economic industry classification, and the code is 383.

Wires and cables are wire products used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. Wires and cables in a broad sense are also referred to as cables for short. Cables in a narrow sense refer to insulated cables, which can be defined as: a collection composed of the following parts; one or more insulated cores, and their respective coatings, the total Protective layer and outer sheath, cables may also have additional uninsulated conductors.

Extended information:

Wires and cables are wire products used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. Wires and cables in a broad sense are also referred to as cables for short. Cables in a narrow sense refer to insulated cables, which can be defined as: a collection composed of the following parts; one or more insulated cores, and their respective coatings, the total Protective layer and outer sheath, cables may also have additional uninsulated conductors.

Common cable faults:

1. Wire surface markings - According to national standards, the surface of the wire should have continuous markings of the manufacturer's name, product model and rated voltage. This helps to find the manufacturer in time when problems occur during the use of the wire. Consumers must pay attention to this when purchasing wires. At the same time, when purchasing wires, consumers should pay attention to whether the manufacturer's name, product model, and rated voltage indicated on the certificate are consistent with the printed mark on the surface of the wire to prevent counterfeit products.

2. Appearance of wires - When purchasing wires, consumers should pay attention to the fact that the appearance of the wires should be smooth and flat, with no damage to the insulation and sheath layers, clear markings, and no greasy feeling when molding the wires with their hands. From the cross-section of the wire, the thickness of the insulation or sheath should be uniform over the entire circumference of the wire and should not be eccentric. The insulation or sheath should have a certain thickness.

3. Conductor wire diameter - When purchasing wires, consumers should pay attention to whether the conductor wire diameter matches the cross-section indicated on the certificate. If the conductor cross-section is too small, it is easy for the wire to heat up and cause a short circuit. It is recommended that wires for household lighting circuits should use wires of 1.5 square millimeters and above; household appliances such as air conditioners and microwave ovens with larger power should use wires of 2.5 square millimeters and above.

Reference: Baidu Encyclopedia-National Economic Industry Classification