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How to choose good quality electric wires

For the electrical wires, they are the necessary products for house decoration. It is import to choose the good quality products. Otherwise, it will not only affect our normal life, but there may also be huge safety hazards.
Before making your decision, you’d better to know the following knowledge.

good quality electric wires

good quality electric wires

1. Appearance
Smooth and round, uniform color, insulating material and copper core are tight and not easy to peel off, inferior insulation material looks thick, but when pressed hard, the squeezed part will become white, and it will be easy to age and fall off in the future, causing electric leakage.
2. Eccentricity
The thickness of the insulation material is the same, that is, if the copper core is in the middle of the wire, the eccentricity is low.
3. Flame retardant
Use a lighter to burn the insulation material. When the lighter leaves the wire, the wire should be automatically extinguished and a small amount of white smoke will be released. If the flame spreads and a large amount of white smoke is released, the insulation material quality is not good.
4. Copper core
The high-purity copper core is anti-aging, high conductivity, and the fake color is yellow or white, and contains impurities. You can rub a piece of white paper on the copper core. If there are black substances on the white paper, it means that there are more impurities in the copper core. .
5. Logo
Whether there is a complete certificate of conformity, “CCC” mark, rated voltage, length, date, factory name and address and other complete information.
6. Thickness
The size of inferior copper core is often smaller than the size of a regular factory, and the outer insulation is thick, and the error of the wire section diameter cannot exceed 0.02%.
7. Length
The length of the wire product conforms to the national standard 100±0.5m (that is, the standard is 100 meters, and the allowable error is 0.5 meters).
8. Weight
For the whole wire (100 meters), 1.5 square meters shall not be less than 1871 grams, 2.5 square meters shall not be less than 2915 grams, 4 square meters shall not be less than 4312 grams, and 6 square millimeters shall not be less than 6107 grams.

Hope the above information can help for your choosing to avoid any cheating.

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