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. Distribution boxes serve three essential functions in any electrical installation: Safe installation requires corrosion-resistant materials, adequate internal cable space, and quality wiring throughout. It takes the incoming power and safely distributes it to different circuits throughout your building.