【 Cable 】 The influence of parsing the wire length to use - cable

Most people will notice that the longer the wire cable, the greater the impact on signal transmission, so the longer the wire, the current will have effect? The use of daily what effect? The answer is yes, the different cable length, current size will be different, but also a direct impact on all aspects of the wire. The resistance of the wires is proportional to the length of the wire in the power supply system is equal to the resistance in series in power supply circuit, according to the Ⅰ = U/R, under the premise that the voltage must be, the longer the wire type of R, the greater the current Ⅰ is smaller, so the wire length and inversely proportional to the size of the current relationship. When the longer the length of wire, the smaller the current; When the short the length of the wire, the greater the current. Although in the general case, the length of the wire to a certain extent, the current impact is not big, but the length of the wire will still affect other aspects, from the above that, wire length is proportional to the resistance, the relationship between and the heat generated by the electric wire and resistance is proportional to the relationship. This means that the same specifications of the wire, the use of the longer, the more heat is, and the heat can't send out in time, will accelerate the aging of the wire, it is not a simple loss problem, wire aging can lead to a series of security problems, if the wire insulation aging after fall off, leakage, short circuit, such as accident, may be the cause of wire for the catastrophic consequences of our lives. To avoid such a situation, can be solved from two aspects: 1, reduce the wire length by changing the installation requires a lot of people are decorated now 'horizontal flat vertical' of the traditional way to laying wiring, however this installation will not only use a longer wire, wire tube will subsequently and increase the cost, construction time, so should as far as possible when wiring way 'two point one line' wiring. 2, choose high quality wire, radically reduce resistance, etc. As we all know the higher the purity of copper wire, the resistance is smaller, with BYJ low smoke zero halogen wire and cable, for example, use 99. 99% of the oxygen free copper as a copper core, low resistivity, good electrical conductivity, negligible length influence on resistance, heat, and do not contain halogen, contains no lead, cadmium, chromium mercury as insulation materials, such as combustion will not emit toxic fumes, not easy ageing, can be a long use life for 70 years, fundamentally solve the problem of all kinds of security.