Surface-mounted electrical box installation height 6
FIRE ALARM VISUAL ONLY DEVICE OR A COMBINATION AUDIBLE AND 80" TO BOTTOM OF DEVICE OR NOT MORE THAN 96" TO TOP. Clearance: Electrical panels must be installed in a readily accessible area with a minimum clearance of 30 inches (762 mm) wide, 3 ft (36 inches or 914 mm) deep, and 6. The panelboard's door (hinged cover) shall be able to be opened to a full 90°. 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 dimension for height of working space for equipment operating at 600 volts (V), nominal, or less to ground and likely to require examination, adjustment, servicing or maintenance while energized shall comply with the 110.
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