Mar 04, 2023
Compared with the service life of non-standard wire and cable, there is no doubt that the service life of national standard cable is long.
Next, we will briefly analyze what are the hidden dangers of non-standard cables:
1. The insulation layer of non-standard wire and cable mainly plays the role of preventing leakage and ensuring safety. If the insulation layer is not up to standard wire and cable, it is easy to crack the insulator during installation, so that the live conductor is exposed, threatening personal and property safety.
2. The core material of non-standard wire and cable is unqualified, and the copper core conductor accounts for 70%-80% of the wire cost. The state has clear regulations on cable manufacturing: the copper conductors of wires and cables 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 impersonate copper. The conductivity of these coppers is very poor, and it is easy to cause the resistance to exceed the standard.
3. The cross-sectional area of non-standard wires and cables is not enough, and the problematic wires are charged with small to reduce the amount of copper used to reduce costs.
4. The length of non-standard wires and cables is not up to standard, and the standard line is full 100 meters, while most of the non-marking lines are about 90 meters. Some wires have a measured length of less than 50 meters, and the total length is claimed to be 100 meters.
In addition to the above, non-standard cables also have huge safety risks, non-standard cables can not be competent for the work of national standard cables, if the non-standard cable as a national standard cable, combined with the above shortcomings, often "overloaded" the use of high-power electrical appliances, beyond the safety current of the cable leads to heat aging, in addition, the "non-standard" cable outer insulation can not meet the standard, the degree of anti-aging reduction will be easy to rupture, the service life will not be very long.
The price of national standard cable is relatively expensive, but it can be guaranteed to be genuine, long-term use, trouble-free, rest assured. Non-standard cables are cheap, but they cut corners and are prone to accidents, and fires caused by wires are not uncommon.
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