Distribution box and switch box should not exceed 30 meters. Generally, distribution boxes can be divided into three levels of secondary protection, that is, three levels of distribution boxes: general. According to the "Code for Acceptance of Construction Quality of Building Electrical Engineering" GB50303-2002, the vertical distance between the bottom surface of the fixed stainless steel enclosure ip67 and the ground should be greater than 1. The bottom surface. In homes, the best height for installation is about 1. 5 meters from the floor — it's easy to reach and out of children's reach. Each DISTRIBUTION BOX and controller must be grounded. Grounding of the units: Attach a ground wire from one of. Electrical clearances set the minimum safe distances for panels, overhead lines, pools, and buried wiring — and ignoring them has real consequences.
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