How to recognize the authenticity of household copper wire
Try. It is advisable to have a wire head bent repeatedly by hand. All hands are soft and have good fatigue resistance, and the plastic or rubber feels flexible and the wires and insulators are free of cracks.
Length, the country is not mandatory, must fight meters, but there are many manufacturers also hit the meter, and meters are not necessarily national standards, but the general national standard is generally not hit meters. Non standard meters, that is only a means, the general national standard line length is 100 meters
Look, copper, copper light brightness is higher, copper is better, and the brightness of the uniform, shiny, no hierarchy, qualified copper core wire, copper core should be purple, shiny, soft feel. If you can cut off a small plastic sheath, carefully check the inside of the copper wire, copper wire with the palm top touch, feel should be smooth without pain, feel is soft, and the copper wire copper core and purple black, yellowish or whitish, impurity, poor mechanical strength, good toughness. A little force will be broken, and often wire breakage phenomenon. When you check, you just peel the wire off 2CM, then rub it with a sheet of white paper on the copper core. If there is a black substance on the white paper, there is a lot of impurities in the copper core. In addition, the inferior insulated wire seems to be very thick. In fact, most of the insulation is made of recycled plastic. Over time, the insulating layer will age and leak.
I have identified cortical insulation, such as wire specifications, 3C certification and legible, general water washed away, it won't rub off, if you want to wash it with water to wash the writing must be a banana, wire circle certificate, manufacturers address telephone, 3C identification certificate, quality system certification, voltage specification of the wire. The fake line is not or is missing.
Burn with fire. Fake wires burn quickly, with open flames and smoke. Wires burn slowly, with little smoke, no smoke, no fire.
