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. • Complete 3-Phase Dual-Mode ATS Wiring Mast. • 3-phase 4-wire distribution system In this video, I'll show you step-by-step how to wire a distribution board (DB) safely and professionally. It contains multiple circuit breakers and connects various electrical circuits to ensure the safe flow of electricity throughout the building. Here is an overview of the wiring process: Power source (e. The wiring diagram of main distribution board is composed of an upper panel, a lower panel, the wire connections, and the various circuit breakers.