Electrical Wiring Guides & Circuit Tutorials
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Electrical Guides and Articles
Clear explanations of wiring, components, regulations, and electrical safety.Looking for what's new in the app? Product updates & release notes →
How to Wire a Ring Main: Complete UK Socket Circuit Guide
Step-by-step UK guide to wiring a ring main circuit: 2.5mm² Twin & Earth cable routing, 32A MCB protection, socket connections, and continuity testing.
Intermediate Switch Wiring Diagram: 3-Way Switching Guide
Clear intermediate switch wiring diagrams and guide. Control a light from 3 or more locations using two-way and intermediate switches in UK installations.
Short Circuit vs Open Circuit: What's the Difference?
A short circuit and an open circuit are opposite faults — one causes too much current, the other causes none. This guide explains both, their real-world causes, and how to identify each.
What Is an RCBO? The Difference Between RCD, MCB and RCBO Explained
An RCBO combines overcurrent protection with earth leakage detection in one device. This guide explains how it works, how it compares to MCBs and RCDs, and when you should use one.
5 Common Electrical Wiring Mistakes (and How to Avoid Them)
Reverse polarity, missing earths, overloaded rings — these five wiring mistakes are found in thousands of UK homes. Learn what they are, why they're dangerous, how to spot them, and how to test your own circuits safely.
Ring Circuit vs Radial Circuit: Differences, Pros & Cons
Compare UK ring final vs radial circuits: understand differences in cable sizes, 32A vs 20A MCBs, spur limits, floor area rules, and fault risks.
Live, Neutral & Earth Wires Explained: UK Roles & Colours
Learn what live, neutral, and earth wires do in UK electrical systems. Understand brown, blue, and green-yellow colour codes, functions, and wiring safety.
How to Wire a Two-Way Switch: Complete Guide with Diagrams
Two-way switching lets you control one light from two locations — the classic staircase circuit. This guide explains exactly how two-way switch wiring works, the role of COM, L1, and L2 terminals, strapping wires, and how to simulate the full circuit in a free electrical 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.