How to truly distinguish between good and poor quality of cables and wires

It may be more difficult to detect the movement of foot meters in meters, as customers generally do not have equipment to actually measure meters. The same weighing method can be used to determine whether the cable is foot meters. Alternatively, printing rice labels during factory production is also a good method, but it should be noted that lines with a diameter less than 5mm cannot be printed with rice labels.

Foot copper is a precious metal, and if there is a slight decrease in copper diameter, it can reduce a significant amount of raw material costs. In this case, a micrometer is needed to measure the diameter of the copper wire. If there is no micrometer, a simpler method is to weigh the entire coil of wire and see if it is much lighter than high-quality cables. Alternatively, you can refer to the nominal weight provided by the factory. Some factories give lower nominal weights, which naturally cannot guarantee product quality.

How to identify the quality inside wires and cables:

High quality copper cables use high-purity oxygen free copper, with bright copper cores and dull copper wire surfaces.

extruder

Plastic is made of high-quality virgin plastic with good bending performance, which does not produce texture when bending cables. Poor recycled plastic will show obvious texture after bending several times, and may break after multiple bends.

Cable equipment

In order to ensure the roundness of the cable, auxiliary materials will be added to the cores of multi-core cables, and the thickness of the sheath will be relatively thick. If the cable in hand is not round, it indicates that the filler is added very little and the sheath is made thin.

Cable equipment

During production, multiple strands of copper wire are bundled to improve the tensile strength, roundness, electrical performance, and tightness with the insulation layer of the copper core. However, because bundling increases the amount of copper used, many factories omit this step. The distinguishing method is to cut open the core wire of the cable and see if the copper wires inside are twisted together in a regular pattern.

Braiding cables with copper mesh weaving layers accounts for a significant portion of the cable material cost, and the coverage of the weaving layer directly affects the electrical performance of the cable. At the same time, a tightly woven layer can increase the strength of the cable and reduce the decline in electrical performance of the cable in a bent state. So checking whether the weaving layer has a high coverage rate and whether the weaving is uniform and fine is an important means to distinguish between good and bad cables.