1. The installation of distribution box protection wire is connected reliably
2. There shall be no naked electric exposure outside the cabinet (box), and the electrical components must be installed on the outer surface of the cabinet (box) or on the distribution board, and there must be reliable screen protection
3. The electrical components, instruments, switches and circuits of the distribution box should be arranged neatly, installed firmly, and operated conveniently. The cabinet (box) should be free of water and sundries
4. The distribution box shall be made of non-combustible materials
5. The bottom of the distribution cabinet (box) installed on the ground should be 50~100 mm higher than the ground; Operation handle center height is generally 1.2 ~ 1.5m; There is no obstacle in the range of 0.8 ~ 1.2m in front of the cabinet (box).
6. In production places and offices with low risk of electric shock, open switchboard can be installed.
7. Closed boxes should be installed in processing workshops, casting, forging, heat treatment, boiler room, woodworking room and other places with high risk of electric shock or poor working environment.
