In order to save money and ignore safety, some users specially select inferior wires and cables with low price, unreliable quality and great accident potential.
We know that due to the safety of wires and cables, the price of wires and cables can not meet the requirements of some users.
However, some individual and private enterprises can not meet the requirements of national standards in material selection, production technology and testing methods, and their safety will not be guaranteed. In addition, making a fuss about short feet and short meters will flood the market with its low price and cater to some users.
Therefore, users are advised not to covet cheap wires and cables.
2. Improper selection Some users don't know enough about their own electrical requirements and environmental conditions, and often choose the wrong model because they don't know enough about the scope of use, requirements and performance of wire and cable models.
For example, the power of the slag truck in front of the steelmaking plant is a motor, and the temperature in front of the furnace is as high as 800℃ ~ 900℃. Under such environmental conditions, because the factory knows nothing about the special requirements of wires and cables, the general rubber-sheathed flexible cable is selected for YC charging, which leads to short service time and charred sheath, which not only affects production, but also wastes economy.
After negotiation, the fire-resistant and flame-retardant cable was selected, which reduced the pain and economic loss of replacing the cable and ensured the normal production of the enterprise.
Some important departments, high-rise buildings, computing centers, chemical industry, public entertainment places and places where people are concentrated should use flame-retardant or fire-resistant cables with fire-fighting function; The Ministry of Coal stipulates that cables used in deep wells of coal mines must be flame retardant; There are also elevator cables, welding machine cables, motor leads and so on. They all have special performance requirements.
In actual use, some enterprises, especially individual enterprises, often don't know enough about these special wires and cables with special requirements and refuse to use them. Some enterprises ignore the requirements of the Ministry of Coal that cables for deep wells in coal mines must be flame retardant, and generally use rubber-sheathed flexible cables; There are also some karaoke bars and places where people are concentrated, and some general wires and cables without fire fighting function are installed, which has caused great hidden dangers of accidents.