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There are many different standard wires and plugs on the market, so what should we pay attention to when choosing to buy? Let's take a look below!
1. to see
See if there is a quality system certification; see if the certificate is standardized; see if there is a factory name, factory address, inspection stamp, production date; see if there are trademarks, specifications, voltages, etc. printed on the wires. It also depends on the cross-section of the copper core of the wire. The superior-quality copper has a bright color and a soft color, otherwise it is a defective product.
2. to try
It is preferable to bend a wire end repeatedly by hand. Those with soft hand feel, good fatigue resistance, plastic or rubber feel elastic and no cracks on the wire insulator are superior products.
3. Weighing
Good quality wires are generally within the specified weight range. For example, the commonly used plastic insulated single-strand copper core wire with a cross-sectional area of 1.5 mm2 weighs 1.8 to 1.9 kg per 100 m; the plastic insulated single-strand copper core wire of 2.5 mm2 has a weight of 3 to 3.1 kg per 100 m; 4.0 mm2 The plastic insulated single-strand copper core wire has a weight of 4.4 to 4.6 kg per 100 m. Poor quality wire is underweight, either not long enough, or has too much impurities in the copper core of the wire.
4. Look at copper
Qualified copper core wire copper core should be purple, shiny and soft to the touch. The copper core of the fake and inferior copper core wire is purple-black, yellowish or white, with many impurities, poor mechanical strength and poor toughness. When checking, you only need to peel off one end of the wire by 2 cm, and then rub a piece of white paper on the copper core. If there is black material on the white paper, it means that there are more impurities in the copper core. In addition, the insulation layer of fake and inferior 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.
5. Look at the price
Due to the low production cost of counterfeit and shoddy electric wires, traders often sell them at low prices under the guise of cheap and high-quality wires, which makes people fooled.
Jiying is a professional Israel/Brazilian standard power cord manufacturer, if you are interested in our products, please contact us.
