Civil wire and cable purchase knowledge

2022-07-22
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With the development and popularization of household appliances, household power consumption has increased rapidly. In order to ensure the safe use of electricity at home, consumers should pay attention to the following matters when purchasing and using wires: → related links: problems that should be paid attention to when purchasing qualified wires and cables. First, according to the provisions of national standards, the surface of wires should have

with the development and popularization of household appliances, household power consumption has increased rapidly, In order to ensure the safe use of electricity at home, consumers should pay attention to the following matters when purchasing and using wires: → related links: problems that should be paid attention to when purchasing qualified wires and cables

I. marks on the surface of wires

according to national standards, the surface of wires should have continuous marks of manufacturer name, product model and rated voltage. This is conducive to finding the manufacturer in time when problems occur in the use of wires. 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 indicated on the certificate are consistent with the printed marks on the surface of the wire to prevent counterfeit products

II. Wire appearance

when purchasing wires, consumers should pay attention to the smooth appearance of wires, no damage to insulation and sheath, clear signs, and no greasy feeling when modeling wires. From the cross-section of the wire, the thickness of the insulation or sheath on the whole circumference of the wire should be uniform, and the core should not be biased. The insulation or sheath should have a certain thickness

III. conductor diameter

consumers should pay attention to whether the conductor diameter is consistent with the section indicated on the certificate when purchasing wires. If the conductor section is too small, it is easy to heat the wire and cause short circuit. It is suggested that the wires for household lighting lines should be 1.5 mm2 or above; Household appliances with high power, such as air conditioners and microwave ovens, should use wires of 2.5 mm2 and above

IV. standardized use

wiring should be standardized. It is best to use bv single core wire to pass through the pipe for fixed lines, and pay attention not to damage the wires when wiring and when decorating the room; Do not connect in the middle of a route; Do not touch the wire when the wire is connected to the electrical box (box); In addition, household appliances with large power consumption, such as air conditioners, should be powered by a separate line; It is best to keep a certain distance from wires used for weak and strong electricity

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