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Analysis of the structure of the power cord
Apr 04, 2018

The structure of the power cord is not very complicated, but it should not be seen through the surface at once. If the power cord is properly researched, some areas still need to be professional to understand the structure of the power cord.

The main structure of the power cord is the outer sheath, the inner sheath, and the conductor. Common transmission conductors include copper and aluminum wires.

Outer sheath

The outer jacket is also called the protective jacket. It is the outermost jacket of the power cord. This outer jacket plays the role of protecting the power cord. The outer jacket has powerful features such as high temperature resistance and low temperature resistance. Anti-natural light interference, good degree of winding performance, high service life, environmental protection materials and other characteristics. Inner sheath: The inner sheath is also called the insulating sheath. It is an indispensable intermediate structure part of the power cord. The main purpose of the insulating sheath is to insulate it. It ensures the power of the power cord is safe, so that the copper wire and the air are not Any leakage phenomenon will occur, and the material of the insulating sheath should be soft, so that it can be well set in the middle layer.

Copper wire

The copper wire is the core part of the power line. The copper wire is mainly the carrier of current and voltage. The density of the copper wire directly affects the quality of the power line. The material of the power cord is also an important factor in quality control. The quantity and flexibility of the copper wire are also considered. [1] 

Inner sheath

The inner sheath is a layer of material that wraps the cable between the shield and the core, typically polyvinyl chloride or polyethylene plastic. There are also low-smoke halogen-free materials. Use in accordance with the rules and regulations, so that the insulation layer will not be in contact with water, air or other objects, to avoid moisture and insulation from mechanical damage.


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