What is the incorrect understanding of the wire and cable

Wire and cable used in all walks of life, then the wire and cable before the purchase, we will be through the network to understand a variety of parameters and evaluation, but a lot of online evaluations are not very professional, often resulting in psychological doubts and concerns of the user, in the purchase will also be blocked. The following Huicheng yuan editorial to explain in detail our understanding of the common misunderstanding of the cable. First, the thicker the cable insulation the better? In fact, it is not, cable insulation is too thick will increase the difficulty of cable laying, now cable laying to bridge or through the pipe is mainly, many companies are now practicing cable requirements tight, small outer diameter, in the process of laying there can be gaps, radiating heat, to ensure that the cable outer sheath is not damaged, or else, to the construction unit and cable laying to bring about certain difficulties. In the summer, the working temperature will rise, these temperatures will be emitted through the outer sheath, the sheath thickness increases, the heat is difficult to emit, it will affect the service life of the cable, because the polyvinyl chloride in the role of heat, so that the insulating layer undergoes a series of physical and chemical changes, the loss of the original good performance, resulting in a significant decline in insulation, and even short circuit, so the choice of cables, the thickness of the cable must be Meet the standard. Second, wire and cable radiation? Wire and cable is indeed radiation, however, the fact is that everything that is charged with radiation, such as 220V wires also have radiation, but its radiation is negligible, basically negligible, and the radiation of the wire is much lower than the radiation of cell phones, if you are really afraid of wire radiation, then you can first throw the phone. If you are afraid of the magnetic field generated by wires and cables, and think that the magnetic field will cause any harm to the human body, then the geomagnetic field is even more terrible. Therefore, I think that "radiation will damage the health of the wire" is purely unfounded. Third, flame retardant cable will not burn? Error! Flame retardant wire and cable flame retardant refers to the occurrence of fire accidents in the wire and cable, can block, delay the flame along the wire and cable diffusion and spread, minimize the expansion of the scope of the wire and cable fire, the type of cable has a fire after self-extinguishing characteristics. Fire-resistant wire and cable refers to the wire and cable fire accidents, the wire and cable products in the external flame is still burning, can adhere to the normal operation of a certain period of time, to maintain the integrity of the wire and cable lines and maintain the normal operation of the line equipment. Fourth, the wire is not enough square is not qualified? Not absolute! For many people this has been the existence of common sense, but the fact is not so. With the improvement of the conductor material production process and scientific and technological advances, oxygen-free copper advanced production process has been widely used, copper conductor material resistivity is sufficient to ensure that with less than the nominal diameter of the copper wire to meet the corresponding specifications of the DC resistance requirements, and wire and cable conductors on the conductor resistivity have strict requirements, for example, the provisions of the 25 square millimeters of the copper conductor in the 20 ° DC resistance is not more than 0.727Ω/km, so as long as the value is not greater than the conductor is qualified.

2, on the 3M electronic products network platform related to the introduction and sales of products brief: 3M electronic products network - professional agent / production / sales of a variety of {connectors | wiring harness | wire and cable products }; if you have a related [connectors | wiring harness | wire and cable products] purchasing / sourcing needs or would like to buy / to understand which connectors | wiring harness | wire and cable products we can provide solutions, please contact the Division I business personnel below; If you have related [connectors | harness | wire and cable products] sales / resources and promotion needs, please click on the ¡¡ Business Cooperation ← ¡" to discuss with a person!