Center height of the three-level distribution box
Residential: The recommended height for distribution board and consumer unit is between 1 metre to 1. The horizontal distance between a switch box and its controlled fixed electrical equipment should preferably not exceed 3 meters. The Unified Facilities Criteria (UFC) system is prescribed by MIL-STD 3007 and provides planning, design, construction, sustainment, restoration, and modernization criteria, and applies to the Military Departments, the Defense Agencies, and the DoD Field Activities in accordance with USD (AT&L). 4kV to the distribution cabinet (primary distribution cabinet), then the outgoing line is led to the distribution box (secondary distribution box) in each building, and finally the outgoing line is led to the distribution cabinet.
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