Cable connection attribute

Single-phase load 50KW, current about 100A, divided into three phases, each phase 33A. Select 5* 16 incoming line. Three L-N lines and one PE line, pay attention to the balanced distribution of three-phase load. Choose a threesome for the main circuit breaker, and 60A is the best. Pay attention to the leakage protection setting of the socket. It is forbidden to use aluminum wires, and the protective wires are not considered upstairs. 4-core wires cannot be used.