Main load power supply
Construction of Class B, Class C workshops and Class C warehouses with a height exceeding 50 meters; A high-rise civil building.
Secondary load power supply
Workshop (warehouse) with outdoor fire water consumption greater than 30L/s; Grain warehouses and silos.
Main load power supply
There are more than 6,543,800 books, and the security system of important libraries and the computer system of book retrieval use electricity.