Wire is related to the homes of life and property safety and normal operation of almost all industries can special goods, use scope is extremely widespread, especially in the temporary thread and a family to decorate interior thread usage is very large, if you use the fake of wire and cable, light may cause short circuit, electric shock, heavy could cause a fire, causing casualties. This is why we refuse to use inferior cables, Wenchang Cable will tell you what is fake wire and cable, and how to identify fake wire and cable.
1,Look at if there is a quality system certification; ask the supplier whether the qualification certificate is standard; check the wire if have a factory name, factory address, inspection seal and production date; look at whether the wire is printed with trademark, specification, voltage, etc. Also look at the cross section of wire copper core, superior copper color bright, soft color, otherwise it is inferior. Consumers in the purchase of wire should pay attention to the appearance of the wire should be smooth, no damage to the insulation and sheath layer, clear logo printing, no greasy feeling when touching the wire. From the cross section of the wire, the thickness of insulation or sheath on the whole circumference of the wire should be uniform, should not be biased core, insulation or sheath should have a certain thickness.
2. Try the cable with hands. Take a wire head with the hand repeatedly bending, all feel soft, good fatigue strength, plastic or rubber feel elastic and wire insulation without cracks is superior.
3, Look at the copper. Qualified copper wire copper core should be purplish red, shiny, soft feel. And fake copper core wire copper core is purplish black, yellow or white, impurities, poor mechanical strength, poor toughness, a little force will be broken, and wire often broken phenomenon. When checking, you only need to peel off one end of the wire 2cm, and then rub it on the copper core with a piece of white paper. If there is black material on the white paper, it indicates that there are more impurities in the copper core. In addition, the insulation layer of shoddy wires seems to be very thick, but in fact most of them are made of recycled plastic. Over time, the insulation layer will age and leak electricity.
4.Look at the wire weigh. Wires of good quality are generally within the limits of prescribed weight. For example, the commonly used plastic insulated single strand copper core wire with a cross-sectional area of 1.5mm2 weighs 1.8 ~ 1.9kg per 100m.2.5mm2 plastic insulated single strand copper core wire, weight of 3 ~ 3.1kg per 100m;4.0mm2 plastic insulated single strand copper core wire, weight 4.4-4.6kg / 100m, etc. Poor quality wires are not heavy enough, either long enough or have too many impurities in their copper cores.
5. Look at the price. As the production cost of fake and shoddy wires is low, therefore, vendors in sales, often in the guise of cheap and good quality sales, so that people cheated.
According to the above several simple verification methods, the basic can identify whether it is good or bad wire. Finally, small make up remind you again in the purchase of wire and cable, screening, must pay attention to must choose quality assured factory cooperation, unqualified cable not only affect our use, also directly affect our life, so we have to polish eyes, choose high quality cable with quality assurance.
Post time: Oct-21-2021