2. Handfeel: Due to the use of inferior raw materials, the production process is not good, the copper wire is dark or badly oxidized, and the silk feels hard and the thickness is inconsistent. The wire thickness of genuine wire is consistent, and the copper wire has a particularly bright metallic luster. At the same time, we can also see that the plastic skin on the outer layer of the wire is bright in color and delicate in texture.
3, steel seal: authentic panda single-core line has panda steel seal every meter, with English brand, company logo and other words, no ink, protruding steel seal can be touched with your fingers.
Matters needing attention in the use of electric wires
It should be noted that if wires and cables are laid in areas with strong acidity and alkalinity, they will usually be corroded, and the thickness of protective layer will be eroded by organic chemistry or electrolysis for a long time, which will lead to the failure of protective layer thickness and the reduction of insulating layer, and also lead to cable failure. Therefore, it is necessary to analyze the local soil quality before laying wires and cables.
When installing wires and cables, try to avoid being exposed to the hot sun or being attacked by strong winds and heavy rains, because the accumulation of wires and cables will accelerate the embrittlement of the sheath and reduce the service life of wires and cables, and the external natural environment and pyrogen where the cables are located will also lead to excessive cable temperature and thermal breakdown of the insulation layer, which will lead to explosion and fire.
For the above contents, please refer to Baidu Encyclopedia-Panda Wire and People's Network-The dust on the wire should also be cleaned regularly.