Power control box and installation method thereof

An electric power control box and an installation method thereof belong to the technical field of electric power equipment, and the electric power control box comprises a box body, an equipment fixing mechanism is rotatably arranged in the box body, the equipment fixing mechanism is arranged at a diagonal line of the box body, and two side surfaces of the equipment fixing mechanism are provided with a plurality of threaded holes and heat dissipation holes. An air cavity is formed in the equipment fixing mechanism and communicates with the heat dissipation holes, the air cavity communicates with an air inlet assembly, the air inlet assembly is fixedly installed at the top of the box body, heat dissipation nets are arranged on the two sides of the box body, power equipment can be installed on the two side faces of the equipment fixing mechanism, and the utilization rate of the internal space of the box body is effectively improved; the power equipment is arranged between the air cavity in the equipment fixing m