The enclosure shall be made from cold rolled sheet steel of thickness 3. Unlike standard junction boxes, these distribution systems must meet stringent NEC Article 312 requirements while withstanding environmental challenges ranging from extreme temperatures to direct water exposure. Selecting the wrong specifications can lead to code violations, premature equipment. This specification covers technical requirements of design, manufacture, testing at manufacturer's works, packing, forwarding, supply and unloading at store/site and performance of pillar box with all accessories for trouble free and efficient operation. 5mm; the electrical appliances in outdoor weatherproof box should first be installed on a metal or non-wooden insulated electrical appliance. This project features a custom outdoor electrical distribution cabinet designed for construction site power systems. 5 mm carbon steel and finished with RAL2004 (orange) powder coating for high visibility and corrosion resistance. side of Distribution Transformers b) The L.