Cable trench and pipe guru cross, the cable can pass through the trench in the past? Question added: If you can not wear trench, how to deal with? More
Switch into the fire line with a wire and socket L connected to the zero line into the N, a ground on the ground. This is then connected to the switch is not control socket Di.
Wire generally refers to the outdoor overhead lines, there are high pressure, high pressure, low pressure of the points, but also by insulation, or conductor material points, of course, the second part of the indoor line, such as BV line, there are general The rod will be used on the ground BV line, as well as the ignition point on the high pressure cited off the line, high-voltage jumpers and so on this part of the wire, the general outdoor overhead line on the set of overhead line fixed, by cross-sectional area, Part of the line with the general sleeve cabinet wiring or BV line laying power cable with high and low voltage and control, signal, etc. classification, according to insulation materials, or conductive material points, the basic high-voltage cable 3 core, low voltage cable Core, control cable is divided into 1 core, 2 core, 5 core, 7 core, 10 core and so on high and low voltage cable sets of power cable quota, by cross section points. Control cable is a set of control cable quota, according to the cross-sectional area, and then by the number of cores calculated, based on 3-core, each more than a base price plus 30%, and vice versa.
Generally there are formulas available for calculation, because the factory is commonly used 380/220 volt three-phase four-wire system, therefore, according to the size of the power directly calculate the current
