The installation load of the hotel is 800kW, the calculation load is 400kW, and the calculation current is 760A A. How to integrate it into the household line, what line is used and what is the cross

The installation load of the hotel is 800kW, the calculation load is 400kW, and the calculation current is 760A A. How to integrate it into the household line, what line is used and what is the cross section? The calculated load is 400kW and the calculated current is 760A A. With such a large load, the Power Bureau requires the hotel to purchase a 625KVA transformer and adopt a three-phase five-wire system for power supply. 60 × 10 copper bar is the most suitable for incoming line, and the safe cross-sectional flow is 960A. Or choose 4 × 500 square BV copper core wire; The safe cut-off flow of BV 500 square copper conductor is about 830A A. ..