Power load calculation of factory dormitory?

Firstly, the load of each floor is counted: lighting =20*50W= 1000W, air conditioning =20*3000W=60000W, and temporary load of socket =20* 100W=2000W, that is,1000+60000.

It is recommended that you use three-phase four-wire power supply. The load of each floor is supplied by air conditioner in two phases (each phase/room 10/0), lighting and socket in one phase, and the next floor is interchanged. For example: 1 Building A uses phase A, phase B and phase C for lighting; On the second floor, phases B and C are used for air conditioning, and phase A is used for lighting; On the third floor, phase A and C are air conditioners, and phase B is lighting; And so on, to the top. In this way, each layer of each phase trunk line needs to bear a load of 30,000 W, and at least 10 square centimeter of copper core wire is needed. The total load of the whole building is about 3 15000 W, so it is best to use two 30-square-centimeter four-core cables to supply power in parallel.