Knowledge about purchasing insulated wires

Consumers should pay attention to the following points when purchasing and using plastic wires:
1. Choose products produced by companies with good quality, high reputation and after-sales service. Pay attention to the product label. Generally, the label of plastic insulated wire products should be marked with the factory name, factory address, rated voltage, specification model, length, "3C" certification number, inspection seal, production date, etc. In particular, the label of the cable and wire should be printed with the factory name, Continuity mark including rated voltage and model number.
2. Check the appearance of the product. The appearance of regular products should be smooth, round, and uniform in color. The outer plastic skin of insulated wires should be bright in color and fine in texture. The conductor should be electrolytic copper, and the outer layer should be bright and slightly soft. The informal product should use recycled plastic, with dull color, loose texture, and conductor. Copper is black and hard. It is recycled miscellaneous copper. It has high resistivity and poor conductivity. It will heat up during use and is unsafe.
3. Use scissors to remove a small section of the insulation layer and check whether the insulation thickness is uniform (no deviation from the core) and the plastic is dense and has no pores.
4. When purchasing plastic insulated wire products, it is best to consult an experienced professional electrician, because the current carrying capacity of the wire is related to the cross section of the wire, as well as the material (aluminum or copper), model, and laying method of the wire (open or through). pipe, etc.) and ambient temperature, etc.
5. When using plastic wires, be sure to wire them correctly. It is generally best to have them wired by a professional electrician. When wiring the wires yourself, pay attention to the joints of the insulated wires. They should be firmly connected. Do not simply wrap them together with tape, as this will easily cause the joints to heat up after power is turned on. .