How to wire and cable GB and non-standard wire to distinguish, the method is as follows:
1, to see. To see whether the quality system certification; see certificate is standard; to see whether the factory name, site, inspection chapter, production date; see whether printed wiring trademarks, specifications, voltage etc..Depends on the cross-section copper wire, copper products excellence in bright colors, soft colors, or is defective.
2, try. The desirability of a wire bent repeatedly, any soft, anti - fatigue, and plastic or rubber flexible handle and wire insulation is no cracks in the high-class products.
3, said the weight. Good quality wire, generally in the specified weight range.Such as the cross-sectional area of the 1.5mm2 is commonly used plastic insulating single stranded copper core, every 100m weight of 1.8 ~ 1.9kg;2.5mm2 plastic insulated single stranded copper core, every 100m weight of 3~ 3.1kg; 4.0mm2 plastic insulated single stranded copper core, every 100mweight of 4.4 ~ 4.6kg. Insufficient wire weight of poor quality, or the length is not enough, or copper wire too many impurities.
4, more than the price. Because the cost of making fake wire low, therefore,the traders in the sales, often in the guise of cheap and low-cost sales,deceitful.
5, look at the copper. Copper core copper wire qualified to be purple red,shiny, soft. The copper core copper core and shoddy purple black, yellow orpartial white, impurities, poor mechanical strength, toughness is poor, slightly forced will break, and the wire is often broken phenomenon. When the examination, as long as you take the wire a head of peel 50px, and then use a piece of white paper in the copper core slightly rub, if there is a blacksubstance that white paper, copper core of impurities in the more.