PVC insulated cables and wires (commonly known as plastic wires) are the main carriers for power transmission. They have a wide range of uses, especially in the use of household cables and home improvement indoor lines for urban network and rural network reconstruction. The raw materials for the production of PVC insulated cable and wire products are mainly copper wire, aluminum wire and polyvinyl chloride insulation material (commonly known as plastic). Therefore, their quality will directly affect the quality of PVC insulated cable and wire products.
Faced with many companies' cable and wire products, consumers should pay attention to the following points when purchasing and using:
1. Firstly, the products of large and medium-sized enterprises should be selected. For products that are too cheap, it is best not to buy them. For example, the current 2.5mm2 copper-core sheathed wire, the cost per 100 meters of materials, and the manufacturing cost is between 100 and 110 yuan. Less than 100 yuan, it is not the use of inferior raw materials or shortened length.
2. Pay attention to the product's logo to prevent counterfeit products. General PVC insulation cable and wire product label should be marked with the name of the plant, site, rated voltage, specifications and models, length, "3C" certification number, etc., in particular, the cable should be printed on the cable including the name of the plant, rated voltage, type Within the continuity symbol, the spacing of single cores should not be greater than 200 mm, and the distance between sheath markings should not exceed 500 mm.
3. Before purchasing a PVC insulated cable and wire product, first consider its use. The general situation is that the current through the wire is calculated by the power of the charged appliance, and the size of the wire is selected according to the current size. 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. It is also related to the wire material (aluminum or copper), type, laying method (open coat or tube, etc.) and ambient temperature, etc. There are many factors that affect and the calculation is also more complicated.
4. In the product purchase process, first of all, you can look at the cross section of the wire. The copper (aluminum) core should be in the middle, and the thickness of the plastic layer should be uniform. Then, you can try to strip the plastic on one end of the wire. If it can be peeled off easily, there is a possibility that the plastic strength is not enough. After peeling off the copper (aluminum) core, you can observe the material of the copper (aluminum) core. Normal conditions Under the surface should have a metallic luster, if the copper surface is black or white aluminum surface indicates that the metal oxidation, it is best not to buy. Finally, if possible, try burning it. If the general lighter can burn, and the flame cannot self-extinguish or self-extinguish for a long time, it means that the wire is not flammable. Such wires should never be bought.
5. When using plastic wires, be sure to wire them correctly. Generally, it is best to wire them by professional electricians. When wiring them yourself, pay attention to the connection of plastic wires and wires should be firmly connected. Do not tangled them together with adhesive tape easily. Severe fire can result.
Faced with many companies' cable and wire products, consumers should pay attention to the following points when purchasing and using:
1. Firstly, the products of large and medium-sized enterprises should be selected. For products that are too cheap, it is best not to buy them. For example, the current 2.5mm2 copper-core sheathed wire, the cost per 100 meters of materials, and the manufacturing cost is between 100 and 110 yuan. Less than 100 yuan, it is not the use of inferior raw materials or shortened length.
2. Pay attention to the product's logo to prevent counterfeit products. General PVC insulation cable and wire product label should be marked with the name of the plant, site, rated voltage, specifications and models, length, "3C" certification number, etc., in particular, the cable should be printed on the cable including the name of the plant, rated voltage, type Within the continuity symbol, the spacing of single cores should not be greater than 200 mm, and the distance between sheath markings should not exceed 500 mm.
3. Before purchasing a PVC insulated cable and wire product, first consider its use. The general situation is that the current through the wire is calculated by the power of the charged appliance, and the size of the wire is selected according to the current size. 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. It is also related to the wire material (aluminum or copper), type, laying method (open coat or tube, etc.) and ambient temperature, etc. There are many factors that affect and the calculation is also more complicated.
4. In the product purchase process, first of all, you can look at the cross section of the wire. The copper (aluminum) core should be in the middle, and the thickness of the plastic layer should be uniform. Then, you can try to strip the plastic on one end of the wire. If it can be peeled off easily, there is a possibility that the plastic strength is not enough. After peeling off the copper (aluminum) core, you can observe the material of the copper (aluminum) core. Normal conditions Under the surface should have a metallic luster, if the copper surface is black or white aluminum surface indicates that the metal oxidation, it is best not to buy. Finally, if possible, try burning it. If the general lighter can burn, and the flame cannot self-extinguish or self-extinguish for a long time, it means that the wire is not flammable. Such wires should never be bought.
5. When using plastic wires, be sure to wire them correctly. Generally, it is best to wire them by professional electricians. When wiring them yourself, pay attention to the connection of plastic wires and wires should be firmly connected. Do not tangled them together with adhesive tape easily. Severe fire can result.
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