OSHA and the National Electrical Code (NEC) specify the minimum clearance distances required around electrical panels. These include a depth of 36 inches, a width of 30 inches, and a height of 78 inches. Is distance satisfactory to protect power distribution boxes (breaker boxes, disconnects ranging from anywhere from 50 volts to 440 volts) from damage in active warehouses with stacked material, fork truck traffic, and pedestrian traffic; or does there need to be a protective barrier? If distance. The International Standards of Practice for Inspecting Commercial Properties (ComSOP) states that the inspector should report on the lack of accessibility or working space for electrical panels and gear that would hamper their safe operation, maintenance, and inspection. Many jurisdictional and. Note: Arranged by issue date Note: Arranged by issue dateDesign requirements for low voltage distribution boxes cover NEC, IEC, and safety standards to ensure reliable, compliant electrical installations. You must make safety your top priority when working with low voltage distribution boxes. Design requirements help you follow important standards like. FIGURES. IV. This section covers the operation and maintenance of electric power generation, control, transformation, transmission, and distribution lines and equipment.