The outer sheath, also known as the protective sheath, is the outermost layer of sheath that protects the power cord. Due to different climates, the outer sheath has good resistance to high and low temperatures to adapt to different temperatures. The outer sheath material also uses environmentally friendly materials, which will not cause pollution to the environment. In addition, the outer sheath also has characteristics such as resistance to natural light interference, good winding performance, and high service life. The inner sheath, also known as the insulation sheath, is an indispensable intermediate structural part of power lines. It is a layer of material that wraps the cable between the shielding layer and the core, usually made of polyvinyl chloride plastic or polyethylene plastic, or low smoke halogen-free materials. According to the process regulations, the insulation layer should not come into contact with water, air, or other objects to prevent moisture and mechanical damage to the insulation layer, ensuring the safe operation of the power line. The material of the insulation sheath should be soft to ensure that it can be well embedded in the middle layer. Copper wire is the core part of a power cord and the carrier of current and voltage. The density of copper wire directly affects the quality of the power cord, and the quantity and flexibility of copper wire are also factors to consider. Copper wire has good conductivity, and after various tests, its bending resistance is relatively good. Due to the different environments in which power cords are used, there are extremely high requirements for the tensile strength of conductors in different environments. The tensile strength of copper wire is very high, making it suitable for use in high mountain areas and areas with multiple rivers. Generally, copper wire is divided into hard copper wire, semi hard copper wire, and soft copper wire according to its tensile strength.
The plug is mainly composed of a shell, an inner core, pins, sockets, and internal wires.
The shell protects the plug and user safety, usually made of plastic and metal materials. Because copper has good conductivity, the internal components and pins of the core connecting plug are usually made of copper. The internal wire is the connecting part between the plug and the socket, usually made of copper with good conductivity.
Connect the power cord plug to the electrical equipment, transfer the electrical energy output from the power supply to the electrical equipment, and transfer the power supply energy. The plug provides users with convenient and fast power-off protection function. When an unexpected situation occurs, users can unplug the plug from the socket, cut off the current transmission and avoid the danger of electric shock. It can also protect electrical equipment from damage caused by electrical problems such as overcurrent, overvoltage, or overheating, and ensure the safe and stable operation of electrical equipment.