Be sure that the power distribution box has sufficient power provided to it. Long cable runs can result in a voltage drop, which can be solved by using a heavy gauge wire. Responsible for distributing power to different circuits, it plays a crucial role in maintaining a safe and functional electrical environment. However, like any. The first place to inspect when you experience power quality problems is your service panel. In. A distribution board (also known as panelboard, circuit breaker panel, breaker panel, circuit breaker, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit. Here are some solutions when a power distribution box fails: Safety First: Make sure you are safe.