Wiring Direction: Wiring between the main circuit breaker and each branch circuit breaker in the box generally goes on the left, and the wiring out of the distribution box generally goes on the right. It takes the incoming power and safely distributes it to different circuits throughout your building. This article details the process of installing them, which helps you comprehend distribution boxes. The distribution box (DB box) helps safely and efficiently distribute electrical power. Today, electrical systems are essential for homes and industries. Binding Requirements: The wires should be bound with plastic ties. more Welcome to our comprehensive animated guide on home.