Distribution Box Installation Requirements

Distribution boxes should be made of non-combustible materials. Open-type distribution boards can be installed in production areas and offices with low risk of electric shock. Enclosed cabinets should be installed in processing workshops, foundries, forging plants, heat treatment plants, boiler rooms, woodworking shops, and other places with high risk of electric shock or poor working environments. In hazardous work areas with conductive dust or flammable and explosive gases, sealed or explosion-proof electrical facilities must be installed. All electrical components, instruments, switches, and wiring in the distribution box should be neatly arranged, securely installed, and easy to operate. The bottom of floor-mounted boards (boxes) should be 5-10 mm above the ground. The center height of the operating handle is generally 1.2-1.5 m. There should be no obstructions within 0.8-1.2 m in front of the box. Protective wiring connections should be reliable. No bare live parts should be exposed outside the box. Electrical components that must be installed on the outer surface of the box or on the distribution board must have reliable shielding.