1. Marking on the surface of the wire - According to the national standard, the surface of the wire should have a continuous mark of the manufacturer's name, product model and rated voltage. This is conducive to finding the manufacturer in time when a problem occurs 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 indicated on the certificate are consistent with the printed marks on the surface of the wire when purchasing wires, so as to prevent counterfeit products.
2. Appearance of the wire - consumers should pay attention to the appearance of the wire when purchasing the wire, the appearance of the wire should be smooth and smooth, the insulation and sheath layer should not be damaged, the logo printing should be clear, and there should be no greasy feeling when hand-molding the wire. From the cross-section of the wire, the thickness of the insulation or sheath should be uniform on the entire circumference of the wire, and should not be eccentric, and the insulation or sheath should have a certain thickness.
3. Conductor wire diameter - Consumers should pay attention to whether the conductor wire diameter is consistent with the cross section indicated on the certificate when purchasing wires. If the conductor cross section is too small, it is easy to cause the wire to heat up and cause a short circuit. It is recommended that the wires used in household lighting circuits should be 1.5 mm2 and above; household appliances with high power such as air conditioners and microwave ovens should use wires of 2.5 mm2 and above.
4. Standard use - the wiring should be standardized. It is best to use BV single-core wires to wear pipes for fixed lines. Be careful not to damage the wires during wiring, and do not damage the wires when decorating the room; do not connect in the middle of a route; Do not touch the wires when entering the electrical box (box); in addition, household appliances that consume a large amount of electricity, such as air conditioners, should be powered by a separate wire; it is best to keep a certain distance between the wires used for weak current and strong current.
Common faults in cable lines include mechanical damage, insulation damage, insulation damp, insulation aging and deterioration, overvoltage, and cable overheating faults. When the above fault occurs in the line, the power supply of the faulty cable should be cut off, the fault point should be found, the fault should be checked and analyzed, and then repaired and tested.