Ningbo Qiaopu Electric Co.LTD power cord quality testing tutorial

So how do you test the power cord quality?
First, look at the Certificate of Quality Appliance
If the appliance quality standards, then the appliance should also have received the power line quality inspection, will not have much of a problem.
Second, check the wire cross section
Wire cross-section, qualified products of copper or aluminum surface should have a metallic luster, surface, white black copper or aluminum surface that has been oxidized, is substandard products.
Third, look at the appearance of power lines
Qualified products of the insulation (sheath) layer of soft, ductile very scalable, the surface layer of close, smooth, no roughness, and a pure gloss. Insulation (sheath) layer and the surface should be a clear sign of resistance to rubbing, non-formal insulation material products, insulation felt a sense of transparency, crisp, no toughness.
Fourth, look at the line core power cable
Pure copper and raw materials used undergo a rigorous drawing, annealing, stranding of the wire core, its surface should be bright, smooth, burr, smooth strand tightness, soft and resilient and not easily broken.
Fifth, look at the length of the power cord
Required by the different electrical power line length, prior to fitting the best owners in the purchase of qualified first look at what is length of the cord, so that can make a pretty good idea when purchasing appliances.

In order to ensure the normal use of appliances and residential security, decoration owners in the purchase of household appliances, be sure to pay attention to the power cord options, carefully check its quality, if the power line quality standard, it is best not to buy this appliance, so as to avoid bring their own problems.