Wire and cable is used in all walks of life, so before the purchase of wire and cable, we will understand various parameters and evaluations through the network, but many evaluations on the Internet are not very professional, which often causes users' psychological doubts and worries, and will also be blocked in the purchase. The following Qiaopu cable for you to explain in detail our common understanding of the cable misunderstanding.

1, wire and cable will have radiation?

Wire and cable do have radiation, but the fact is that everything charged has radiation, such as 220V wire also has radiation, but its radiation is very small, basically negligible, and the radiation of the wire is far lower than the radiation of the mobile phone, if you are really afraid of wire radiation, then you can throw the phone away first. If you are afraid of the magnetic field generated by the wire and cable, and feel that the magnetic field will cause any harm to the human body, then the geomagnetic field is even more terrible. Therefore, it is unfounded to think that "radiation from power lines will damage health.

2, wire square is not enough is not qualified?

Not absolutely! For many people, this is common sense, but it is not. With the improvement of the production process of conductor materials and the progress of science and technology, the advanced production process of oxygen-free copper materials has been widely used. The resistivity of copper conductor materials is sufficient to ensure that copper wires with diameters smaller than the nominal diameter can meet the requirements of DC resistance of corresponding specifications. For example, the conductor of wire and cable has strict requirements on the resistivity of the conductor. For example, the DC resistance of the copper core conductor of the specified 25 mm² at 20 is not more than 0.727Ω/km, so as long as the value is not greater than the conductor is qualified.

3, the thicker the cable insulation, the better?

Otherwise, too thick cable insulation will increase the difficulty of cable laying. At present, cable laying is mainly based on bridge or pipe threading. At present, many enterprises are implementing tight cable requirements and small outer diameter. There can be gaps in the laying process to dissipate heat energy and ensure that the outer sheath of the cable is not damaged. Otherwise, it will bring certain difficulties to the construction unit and cable laying. In summer, the working temperature will rise, and these temperatures will be emitted through the outer sheath. The thickness of the sheath will increase, and the heat energy will be difficult to emit, which will affect the service life of the cable. Due to the effect of heat, the insulation layer will occur. A series of physical and chemical changes have lost the original excellent performance, resulting in a significant decline in insulation performance and even a short circuit. Therefore, when choosing a cable, the thickness of the cable must meet the standard.

4, flame retardant cable will not burn?

Incorrect! Flame retardant wire and cable flame retardant refers to the wire and cable fire accident, can block, delay the flame along the wire and cable spread and spread, minimize the wire and cable fire range expansion, this type of cable has the characteristics of self-extinguishing after fire. Fire-resistant wire and cable refers to the wire and cable fire accident, the wire and cable products can be in the external flame is still burning, can adhere to the normal operation of a certain period of time, maintain the integrity of the wire and cable line and maintain the normal operation of the line equipment. Through the introduction of advanced technology and equipment, Qiaopu Cable produces flame-retardant and fire-resistant cables with low smoke and halogen-free characteristics. Compared with halogen-containing flame-retardant wires and cables, halogen-free cables have the advantages of low smoke and environmental protection, and are safe and healthy products.

5, water and electricity laying pay attention to horizontal and vertical

Not necessarily! Although the horizontal screen vertical laying of water and electricity lines looks very good, but their hidden dangers are really quite a lot! First of all, the material cost of the conduit is much higher than that of other methods of laying. Secondly, because it is 90 degrees horizontally and vertically, it is easy to be stuck when threading the wires in the later period! So as long as it meets the specifications!