What is the difference between a dedicated cable and a control cable for a factory communication line?
4 square copper wire should use 25 or 32A air switch.
Air conditioning large (1.2) of the cooling current is 5A, the cooling power is 1100W, and 1.5mm2 copper wire carrying current is 7.5A (1600W), 2.5mm2 copper wire carrying current is 20 -25A (4500 ~ 5500W), theoretically speaking, a large air-conditioning only 1.5mm square with the copper line is more than enough, but taking into account the compressor start-up current for the sake of safety suggest that you use 2.5mm square Of the copper wire, in order to make other appliances have a relatively stable voltage, pull the line is certainly the best.
At least 32A upstairs are outsiders, open are generally 10A15A25A32A64A simply no 30A. 32A can withstand the power is 32A * 220V = 7040W. Ann 25A is a little hot fast
