Regulations on the placement of distribution boxes

Distribution boxes should be installed in dry, accessible, well-ventilated areas at a standard height of approximately 1.3–1.8 meters, with proper grounding, secure mounting, and compliance with electrical codes.Site SelectionDistribution boxes must be installed close to the power supply to minimize power loss and ensure safety. The location should be dry, well-ventilated, and free from corrosive or humid conditions to prevent overheating and equipment damage. Outdoor installations require boxes with appropriate IP or NEMA ratings to protect against water and dust ingress. Avoid areas prone to vibration, collision, or obstruction to maintain operational safety and accessibility .Installation Height and MountingFixed distribution boxes: Bottom edge should be 1.3–1.5 meters above the ground for easy operation and inspection .Mobile or temporary boxes: Bottom edge should be 0.6–1.5 meters above the ground .Distribution boards: Typically installed at 1.5–1.8 meters, adjustable for operational convenience with design approval .Mounting must be firm and level, using suitable brackets or screws to prevent tilting or movement. Vertical deviation tolerance is 1.5mm for boxes