Civil wire and cable purchase knowledge
(A), wire surface marking According to national standards, the wire surface has a manufacturer's name, product model and rated voltage of continuous signs. This helps to find the factory in time when problems occur during the use of the wire. Consumers must pay attention to this when purchasing wires. At the same time, consumers should pay attention to whether the manufacturer's name, product model, and rated voltage on the certificate are the same as those on the surface of the wire when purchasing the wire, and prevent the counterfeit product.
(II) Appearance of electric wires Consumers should pay attention to the appearance of electric wires when they are purchasing electric lift cables. The appearance of the electric wires should be smooth and smooth, the insulation and sheath layers should be free from damage, the signs should be clearly printed, and the hand-molded electric wires should be free from greasy feeling. From the perspective of the cross section of the wire, the thickness of the insulating or sheathing on the entire circumference of the wire should be uniform and should not be eccentric. The insulation or sheath should have a certain thickness.
(C), wire conductor wire diameter consumers in the purchase of wire should pay attention to whether the conductor diameter and the certificate on the corresponding section clearly, if the conductor cross-section is too small, easy to make the wire heat caused by a short circuit. It is recommended to use 1.5 mm2 and above for home lighting circuit wires; for home appliances such as air conditioners and microwave ovens, use wires with a size of 2.5 mm2 and above.
(D), specification should be used to regulate the wiring, fixed line is best to use BV single core thread through the pipe, pay attention to the wiring in the do not touch the bad wire, do not touch the wire in the decoration of the room; in the middle of a route does not connector; wire connection Do not touch the wire when entering the electrical box (box); in addition, household appliances such as air conditioners with larger power consumption should be powered by a single wire; weak, strong wires should be kept at a certain distance.
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