1. The mark of unqualified TUV solar cable 4mm2/6mm2 is the main way of using wire and cable to mark the basic information of the product. According to the standard, the main content of the mark is: product model, specification, standard number, factory name, place of origin, etc. within a certain mark interval. When the mark is unqualified, it will cause the construction personnel to identify the error. In severe cases, the failure of the construction personnel to identify will cause electrical accidents.

      2. For TUV solar cable 4mm2/6mm2 with unqualified structural dimensions, the main problems with their structural dimensions are the thickness of the sheath and the thickness of the insulation. When the sheath and insulation thickness of the cable does not meet the standard, the resistance of the TUV solar cable 4mm2/6mm2 will be severely reduced, resulting in a shortened service life of the wire and cable. Shortening may cause TUV solar cable 4mm2/6mm2 breakage in severe cases, and the insulation layer may not work properly, resulting in electrical short circuit and fire.

      3.The tensile strength and elongation of the insulated sheath of the TUV solar cable 4mm2/6mm2 with aging insulation layer before the direct aging are unqualified, which greatly shortens the service life of the TUV solar cable 4mm2/6mm2, and the insulator is easily broken, causing the exposed conductor to be exposed, and there is a danger of electric shock and short circuit. . The main reason for its disqualification is the use of recycled materials to reduce product costs; the second is that small companies that do not have the production conditions cut corners.