Analyze the main points of identification of the quality of the power cord of the vending machine

Analyze the identification points of the quality of the power cord of the vending machine. 1. Look at the core of the power cord: The core of the power cord is made of good copper raw materials and has been strictly drawn, annealed, and stranded. The surface should be bright, smooth, free of burrs, and the stranding tightness is flat, soft and tough, and not easy to break. . 2. Check the cross-section of the wire: the cross-section of the wire. The surface of the copper core or aluminum core of the qualified product should have metallic luster. The black copper or white aluminum on the surface indicates that it has been oxidized and is an unqualified product. 3. Look at the length of the power cord: different electrical appliances require different lengths of power cords. Before purchasing, find out what the length of a qualified power cord is, so that you can be aware of it when purchasing electrical appliances. 4. Look at the appearance of the power cord: The insulating layer of qualified products is soft, flexible and flexible, and the surface layer is compact, smooth, without roughness, and gloss. The surface of the insulating layer should have clear and scratch-resistant marks. Products made from non-qualified insulating materials have a sense of transparency, brittleness, and no toughness on the insulating layer. 5. Look at the quality certificate of the home appliance: If the quality of the home appliance is qualified, then the quality of the power cord of the home appliance should also be inspected, and there will be no major problems.