1. There is no complete product identification: According to the standard regulations, cables that leave the factory and put on the market must have professional quality inspection certificates and complete commercial identifications, including product models, specifications, origin, etc. If the marks do not meet the specifications, it will cause construction personnel to identify Errors can cause electrical accidents in severe cases.
2. The thickness of the sheath and insulating layer is not up to standard: We all know that the quality of the outer sheath and insulating layer of the cable directly affects the service life of the cable. Therefore, the production of the outer sheath is not up to standard, and the cable is easily broken down. In some cases, insufficient radian of the insulating layer can easily lead to dangers such as leakage, resulting in electrical short-circuits and fires.
3. Conductor resistance does not meet the standard: In order to achieve the purpose of reducing costs, bad manufacturers generally use metal copper of poor quality, or adopt the method of reducing the cross-sectional area of the conductor. As a result, the conductor resistance of the cable will seriously exceed the standard. According to the regulations, the conductor resistance needs to be controlled within a certain range. Once it exceeds the standard, the loss of the current passing through the line will increase, and the cable will be prone to heating. During use, the aging of the cable will be accelerated.
