Ring Circuit vs Radial Circuit: What's the Difference?
Ring circuits and radial circuits are the two ways to wire socket outlets in UK homes. This guide explains how each works, when to use each, cable sizes, spur rules, and how to simulate both topologies in a free browser-based circuit simulator.
Distribution Board Explained: How a Consumer Unit is Wired
The distribution board is the heart of every electrical installation. This guide explains what's inside a consumer unit, how it distributes power to every circuit in a building, and how to simulate a multi-circuit distribution board using a free electrical circuit simulator.
What is an RCD and Why Do You Need One?
An RCD can save your life in under 40 milliseconds. This guide explains exactly how Residual Current Devices work, why they're mandatory in modern wiring, and how to test RCD protection safely using a free electrical circuit simulator.