1P (Single Pole): Controls only the live wire, providing basic protection. A well-chosen distribution box ensures the safety and efficiency of your household electrical system. All the electrical sub circuits are originated from a Distribution Board. The Main feeder cable to the Distribution Board should be able to handle the total power anticipated when all the sub circuits in the Distribution Board. Single Phase wiring installation is the most common wiring in our homes and residential buildings. Whether you're an electrician or a DIY enthusiast, this guide will help you understand the basics of home electrical distribution. more Welcome to our channel! In this video.