Application safety of distribution box and switch box:
1. It should be installed sturdy, which is conducive to actual operation and maintenance.
2. For floor-mounted distribution boxes and switch boxes, the address should be level and higher than the road surface, and no dirt should accumulate around them.
3. The three-phase five-wire port and the group outlet should be built under or on the side of the box. The grounding wire of the transformer of the switching power supply should be threaded with a damp-proof elbow.
4. The transmission lines in the box should be well insulated, ordered in order, and fixed firmly. The edges of the transmission lines should be connected by screws or sleeves.
5. The power distribution box with 3 control loops needs to be equipped with a total knife switch and a separate knife switch. Each branch knife switch shall not be connected to two or about two electrical equipment, and shall not be used for two or about two operation groups.
6. The power distribution box of lighting fixtures and driving force should be equipped with knife switches or other types of power switches.
7. Electrical equipment such as AC contactors, knife switches, power switches, etc. installed in distribution boxes and switch boxes should be flexible in posture and reliable in touch. The circuit breakers should not have serious crevice corrosion. The development of production in my country's power engineering weaponry and power engineering manufacturing industry. The annual growth rate of installed capacity is greater than 8%, and the installed capacity is estimated to reach 800 million kW by 2020.
