Job Recruitment Website - Property management company - Dormitory, three-phase power supply, three floors, each floor with a total power of 28kw. What size copper wire should I choose and what size master switch should I choose? thank you

Dormitory, three-phase power supply, three floors, each floor with a total power of 28kw. What size copper wire should I choose and what size master switch should I choose? thank you

Hello, the total power of each floor is 28kw, and the total power of * * * three floors is 84KW.

The current of 84 kW electrical equipment is about 168A when using three-phase four-wire power supply.

The main switch can be selected according to about 1.5 times of the load current, and 225A is recommended.

If the power supply distance is less than 30m, it is recommended to choose 3*50+ 1*35 square cable section.

The above is for reference only.