Electric cable-based building materials and home decoration is an integral, important content is hidden works, the quality of the wire whether clearance is directly related to the effect of the decoration and electrical safety. Therefore, in the purchase or use wires, how quickly and accurately check the cable quality is good or bad, is the knowledge we urgently want to know.
1, Packaging
See the package a complete certificate, complete information on the specifications shall include the implementation of standards, rated voltage, length, date, name, etc. on the site certificate. See whether the "CCC" and production license number Chinese national compulsory product certification; to see whether the quality system certification; to see whether the norms certificate; see if printed with trademarks, specifications, and voltage on the wires.
2, Wire size
As delineated in the relevant scale error wire length of no more than 2%, a cross-sectional diameter of no more than 0.02%, but the market there are a lot tricks in length, in cross-section fraud phenomenon.
3, Color of copper
Qualified copper wire copper conductor should be purple, shiny, feel soft. And shoddy copper wire copper conductor purple black, yellow or white.
4, Insulating rubber
Shoddy wire insulation looks like a very thick, in fact, is mostly made of recycled plastic, if a little squeeze, squeeze into a white state at will, and there is a powder fall.
5, Wires weight
Within good quality wires, generally in the designated weight range. Such as the commonly used cross-sectional area of 1.5mm2 single strand of plastic insulated copper wire, each 100m weighs 1.8 ~ 1.9kg.
Wire for home brought light, life is full of a variety of fun, to meet the needs of the family life. However, when doing wire installation and construction, if there is negligence, easy for the home environment has a variety of security risks.