quality and properly chosen wiring will always help to secure any room of unpleasant "surprises" associated with the short-circuit currents, insulation breakdown, burning wiring, fire and other household appliances.To avoid such unpleasant situations and incidents can be.To do this, you must initially pay close attention to the cable cross-section.
Most people who have decided to do their own wiring and without the help of experts, does not understand the importance of the procedure, during which will be chosen cable cross section.Even the use themselves of new and modern technologies can not be saved from the above-mentioned problems, if wrongly selected cross-section of power cables.
When the selection process should take into account cross-section all the factors: the magnitude and duration of the load, the rated current, which will be held on a cable, the maximum and minimum voltage, power load.It is necessary to check the conductor resistance to high temperatures (like the environment and the overheating due to a short circuit), the mechanical strength and resistance to possible external damage.Undoubtedly, the cable cross-section depends not only on the above properties and settings.It is necessary to take into account individual differences wiring, and even the influence of the environment and its factors on conductor.
most important indicator in the selection section is the reliability of the cable quality.Here the best option may be called copper.It is much more resistant to the negative effects listed above than aluminum cables.Copper conductor will be more effective, and it is much less susceptible to oxidation, and deformation.Thus, the sectional area of a copper cable is smaller than that of aluminum, provided that the identity of the other characteristics.And purely visual copper conductor will look better.
choosing cable cross-section of power, it must take into account the total capacity of all possible devices.This is very important.Naturally, it is more convenient to select a section of the cable reserve.Also take into account its length and possible voltage losses.
term "cable cross-section" of the name of its cross-section.In electrical engineering, it is determined by a number of design parameters: compliance with the terms of the heating conditions of the mechanical strength of the economic calculation of the current density.
Generally speaking, the correct calculation should imply the existence of formulas.However, you can use a specially compiled tables with the main parameters to select the section of the cable: power, current, voltage is sometimes.These tables can be found in directories of electrotechnical equipment installation.There are shown already calculated data for cables of various sections made from different materials, in view of the majority of possible factors.Also indicated values and correction factors, such as the need to run the cable at low temperatures.
