There is no doubt that the service life of national standard cable is longer than that of non-standard wire and cable,Next, we will briefly analyze the hidden dangers of non-standard cables

1. The insulation layer of non-standard wire and cable mainly plays the role of preventing electric leakage and ensuring safety. If the insulation layer of wires and cables is not up to the standard, the insulator is easy to crack during the installation, which will expose the live conductor and threaten the personal and property safety.

2. The core materials of non-standard wires and cables are unqualified, and the copper core conductor accounts for 70% - 80% of the cost of wires. The country has a clear regulation on cable manufacturing: the copper conductor of wire and cable should use electrolytic copper.

In order to reduce costs and obtain huge profits, some enterprises use recycled copper or copper-clad aluminum, copper-clad iron, copper-clad steel to pass off as copper. The conductivity of these copper is very poor, which easily leads to excessive resistance.

3. The cross-sectional area of non-standard wires and cables is not enough, and the problematic wires are filled with small ones to reduce the consumption of copper and reduce the cost.

4. The length of non-standard wires and cables is not up to standard. The standard wire is 100 meters, while most non-standard wires and cables are about 90 meters. The actual length of some wires is less than 50 meters, but the nominal total length is 100 meters.

In addition to the above, non-standard cables also have huge security risks. Non standard cables are not competent for the work of national standard cables. If non-standard cables are used as national standard cables, combined with the above shortcomings, high-power electrical appliances are often "overloaded",

Beyond the safety current of cable, it will cause fever and aging. In addition, the outer insulation of "non-standard" cable can not reach the standard. If the aging degree is reduced, the outer skin will be broken and the service life will not be long.

The price of national standard cable is relatively expensive, but it can ensure that it is genuine and reliable, and it is easy to use for a long time. The price of non-standard cable is cheap, but it's shoddy and easy to cause accidents. The fire caused by wire is not rare.