Cable selection
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For the cable selection from the power distribution room to the restaurant, a three-phase five-wire cable is required; the power requirement is 182 kilowatts at 380V and 97 kilowatts at 220V. The process for selecting the appropriate cable is as follows. (Civilian use)
Reference standard: JB/T 10181.31-2014 Calculation of cable current-carrying capacity – Part 31: Conditions related to operation; Basic operating conditions and cable selection
182 + 97 = 279 kilowatts. The total calculated load needs to be multiplied by a coefficient, and the resulting value will be lower than 279. Since the conditions are not complete, only an approximate estimate can be made: the main circuit breaker is 500A, and there are 2 cables of type 185; thus, the calculation is 2 * (YJV–0.6/1KV–3*185 + 2*95)