Check for proper IP/NEMA ratings and material quality. Ensure safe placement: install in dry, accessible areas with good ventilation and at appropriate height (typically ~1. Practice good wiring: secure grounding, neat cable management, proper insulation, and correct wire gauge and breaker. 4 KV Substation of the ratings indicated above. These Distribution Cabinets are to be outdoor type nd to be fabricated out of 2 mm GI sheet steel. The body of the boxes shall have sufficient re- enforcement with suitable size of channels keeping a provision for fixin andle conforming to general. This document represents the minimum requirements and specifications for the installation of the electrical underground distribution systems fed from padmounted transformation, serving Secondary Service Accounts, to be transferred to Oncor Electric Delivery Company ownership. REFERENCES This. The manufacturing and installation of distribution box and switch box shall meet the following requirements: (1) the distribution box shall be made of iron plate or other fire-proof insulation materials, so as to achieve ventilation, heat dissipation, rain protection and fire protection. It stipulates requirements for enclosure materials, installation dimensions, the mandatory "one equipment, one switch, one RCD" rule, mechanical structure, earthing systems.
