Distance between secondary distribution box and wall
The required clearance in front of the panel depends on what's directly facing it on the opposite wall: 36" – If facing a non-electrical wall. Working space: The front clearance, side clearance, and height clearance requirements for electrical equipment that provide a safe area for maintenance, inspections, and other work. Electrical clearances are the minimum separation distances the National Electrical Code (NEC) requires between wiring, panels, overhead conductors. Generally, distribution boxes can be divided into three levels of secondary protection, that is, three levels of distribution boxes: general.
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