Residential: Homes typically require single-phase power and a Distribution Box with fewer circuits. These boxes are compact and suitable for managing household appliances and lighting. A distribution box, also known as a power distribution box or electrical distribution box, is used to distribute electrical power safely to multiple circuits. Distribution. Whether you are a professional electrician, a facility manager, or even a homeowner trying to better understand the electrical system of your home, this education aims to simplify the mystery behind the distribution box. You lower the chance of circuits getting too hot or overloaded when you pick the right box for your needs. Safety is the top priority when.