First, you should review the appliances quality certification. If the quality of qualified appliances, the power cord should also have received quality inspection, will not have much of a problem. Many appliances belonging 3C certified products, the purchase of such products should check 3C certification logo and the manufacturer name and address.
Second, we must observe the appearance of the power cord. Eligible products insulation (sheath) layer of soft, toughness and flexibility, the surface layer close, smooth, no rough feeling, and a pure gloss. Insulation (sheath) surface layer should be clear and scuff mark. Informal insulation material products, insulating layer clarity, crisp, no toughness, if plastic wrap wires can easily be peeled off, the plastic may be there is not enough strength.
Third, look at the power line section. Copper or aluminum surface qualified products should have a metallic luster, black surface of copper or aluminum surface whitish explanation has been oxidized, mostly inferior materials.
Fourth, we must view the length of the cord. Different electrical power line required a different length, consumers in the purchase of qualified first look at how much the length of the power cord, so when buying electrical appliances to be aware of.