You'll learn how to connect the main switch, MCBs, neutral link, and earth bar, plus essential tips to avoid common wiring mistakes. Whether you're an electrical student, apprentice, or DIY enthusiast, this tutorial will help you understand how to distribute power properly in. In this video, we'll walk you through the process of wiring a home distribution box with a detailed connection diagram. What Is a Distribution Box? A distribution box, also known as an electrical distribution board, is a critical component in electrical systems. It takes the incoming power and safely distributes it to different circuits throughout your building.