“Distribution box”, also called power distribution cabinet, is a general term for motor control center. The distribution box is a low-voltage power distribution device that assembles switchgear, measuring instruments, protective appliances, and auxiliary equipment in a closed or semi-closed metal cabinet or on the screen according to the electrical wiring requirements.
Installation requirements for distribution box
(1) The distribution box shall be made of non-combustible materials;
(2) For production sites and offices with a low risk of electric shock, open switchboards can be installed;
(3) Closed cabinets should be installed in processing workshops, casting, forging, heat treatment, boiler rooms, woodworking rooms, and other places with a high risk of electric shock or poor working environment;
(4) In hazardous workplaces with conductive dust or flammable and explosive gases, closed or explosion-proof electrical facilities must be installed;
(5) The electrical components, meters, switches, and lines of the distribution box should be neatly arranged, firmly installed, and easy to operate;
(6) The bottom surface of the board (box) installed on the ground should be 5~10 mm higher than the ground;
(7) The height of the center of the operating handle is generally 1.2 ~ 1.5m;
(8) There are no obstacles within the range of 0.8 to 1.2m in front of the box;
(9) The connection of the protection line is reliable;
(10) There shall be no exposed bare conductors outside the box;
(11) The electrical components that must be installed on the outer surface of the box or the distribution board must have reliable shields.
Post time: Jun-13-2022