This guide covers what a distribution board is, exactly what lives inside it, how it distributes power to each circuit, the different types of protection available, and how to safely simulate a multi-circuit distribution board using ElectraSim — free, browser-based, no. This guide covers what a distribution board is, exactly what lives inside it, how it distributes power to each circuit, the different types of protection available, and how to safely simulate a multi-circuit distribution board using ElectraSim — free, browser-based, no. ElectraSim is a free virtual electrical lab — the easiest way to learn electrical wiring online. Drag real-world components, wire them up, and simulate circuits in real time. A complete electrical circuit toolkit — all running locally in your browser, no server, no cloud. In just a few steps you will find the wiring and assembly plan, including complete documentation in accordance with standards. This is the design philosophy which the browser-based distribution board configurator from Eaton is based on. Distribution board configurator for different types of. Master your electrical wiring skills with immersive and interactive simulations designed for beginners and professionals alike—providing hands-on experience to confidently understand, practice, and perfect electrical circuits and components. These tools support both learning and professional work. Every wire in your home — every socket, every light, every appliance circuit — traces back to a single grey box on the wall: the distribution board, also called a consumer unit or, in older installations, a fuse box.