30kw how much cable and switch to use
Current 50A wire VV or YJV223 * 10 + 1 (30 meters) switch 100A (consider starting current)
Current 50A wire VV or YJV223 * 10 + 1 (30 meters) switch 100A (consider starting current)
50A circuit breaker simply can not bring 30KW load, 30KW load the normal working current is 50-60A. You have to use 3 * 25 copper cable or 3 * 35 aluminum cable, if the distance is large with a large Model, the open selection of 100A.
30kw general voltage is three-phase 380V, I = P / U / 1.732 = 30 * 1000/380 / 1.732 = 45.6A. Generally take about 1.3 times, 45.6 * 1.3 = 59.28A, so you can take more than 60A calibration value of the circuit breaker. If the distance is not far, the cable can take 25 square copper cable. If the voltage is not three-phase 380V, then ask, and then help you calculate.
