There are 60 rooms on the third floor of a hotel. Each room is loaded with about 6000 watts, and 220 volts enters the room. How big is my main line into the hotel?

***60 rooms, 6 kilowatts per room. A ***360 kW, the notes are divided into three phases, each of which is 120 kW. So each phase current is about 600 amperes. The 380 incoming line is about 800 A open circuit, and the line has a full load of 300 square meters. Considering that the actual load will not be full, it is recommended to use double lines 120, that is, two lines are used together. When entering each floor, 95 switches and about 250 switches are selected for three-phase wires, and 20 households on the first floor are evenly distributed to 7 households in each phase of three-phase. Enter the house and choose 63 ampere line, 6 square meters.