Damaged or undersized wires can pose a serious electrical hazard. It takes the incoming power and safely distributes it to different circuits throughout your building. However, the key to. In modern electrical systems, cable distribution boxes (also known as electrical distribution boxes or distribution boxes) play a crucial role as the key hub for managing, distributing, and protecting circuits. Whether it is residential buildings, commercial facilities or industrial sites, the. The NEC code of junction box keeps your electrical work safe and reliable. Always install your boxes where you can reach them later.