Choose the right box based on environment (indoor/outdoor), load capacity, and durability. Check for proper IP/NEMA ratings and material quality. work requires electrical power for many purposes. However, exposure to weather, frequent relocation, rough use and other condi-tions not normally encountered with conventional wiring systems necessitate special consideration not require in other applications or in completed structures. Through a real-world project scenario, we explore how structured connectors, IP67 plug systems. A distribution box is the heart of any electrical system. It takes the incoming power and safely distributes it to different circuits throughout your building.