Due to the use of low-quality wires caused by fire has occurred, and sometimes even just completed the renovation of the new house soon.
It seems that it's really important to use high quality wires in the decoration. So, the question is, how do we tell the quality of the wire?
1 look at the copper core
If the copper core is purple, shiny, soft texture, then the quality of copper is good; if the copper core is purple black, shiny dark, and fold it off, it must be inferior goods.
In addition, the bad copper core is wiped on the white paper, and there will be black residue!
2 see insulation sleeve
Insulating sleeve, that is, the plastic skin outside the wire.
Good insulation should be uniform thickness, tightly attached to the core of the wire, the pinch will not have uneven distribution, in addition, regardless of the color of the insulation sleeve, the surface is smooth.
3 look at 3C certification
When we buy wire, we must see whether there is 3C certification.
Of course, what can be faked now, 3C certification may also be false, you can scrape with your fingers, if the word can be wiped out, that is probably fake.
4 the length and weight of the wire
Under normal circumstances, every 100 meters qualified 2.5 square wire weight should be about 3 kilograms, the error is not more than 0.2 kilograms.
If the wire weight difference is too large, there must be Jerry built, so do not buy the wire.
5 understand the classification and use of wires
Home decoration wires have different colors, how to choose it?
Red, green, yellow wires are generally used in FireWire, blue or black are generally used in the zero line, yellow green double color line is generally used for ground wire.
Wires have different thickness, and how to choose it?
We should select wires according to the load of the wires, generally speaking:
1.5 square millimeter wires are suitable for lighting lines;
2.5 mm2 wire is suitable for ordinary socket;
4 square millimeter wires are suitable for high power appliances such as air conditioners.