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 Shed or Outbuilding: Complete UK Electrical Guide
Powering a shed, garage, or garden outbuilding safely requires the right cable type, burial depth, consumer unit, earthing, and RCD protection. This complete UK guide covers everything from planning to testing.
Electrical Circuit Symbols: Complete Reference Guide
Every electrical circuit symbol you need — wires, power sources, resistors, capacitors, switches, fuses, MCBs, RCDs, lamps, motors, and more. Includes UK/IEC and US comparisons and a printable reference table.
How to Wire an Outdoor Socket: Garden Power and External Sockets Explained
A complete UK guide to installing outdoor sockets and garden power — IP ratings, cable types, RCD protection, burial depth, Part P notification, and how to plan a safe outdoor circuit from the consumer unit.
Single Phase vs Three Phase Power: What's the Difference and Which Do You Have?
Single phase and three phase are the two ways the electricity grid delivers power. This guide explains what each means, how to identify which supply you have, why three phase exists, and when a domestic property might need it.
How a Dimmer Switch Works: Trailing Edge vs Leading Edge and Why It Matters for LEDs
Why do some dimmers flicker with LED bulbs? Why do others hum? This guide explains exactly how dimmer switches work, the difference between trailing edge and leading edge types, and how to choose the right dimmer for LED lighting.
IP Rating Explained: IP44, IP65, IP67 and What Every Number Means
IP ratings tell you exactly how well an electrical fitting resists dust and water. This guide decodes every IP number, explains which rating you need for bathrooms, kitchens, and outdoors, and covers the BS 7671 zone requirements.
Ohm's Law Explained: Voltage, Current and Resistance for Beginners
Ohm's Law is the single most important equation in electronics and electrical engineering. This guide explains voltage, current and resistance from scratch, walks through V=IR with real examples, and shows how the law applies to everyday circuits.
UK Earthing Systems Explained: TN-S, TN-C-S (PME) and TT
Complete guide to UK earthing systems: compare TN-S, TN-C-S (PME), and TT setups, supply earthing arrangements, Ze values, and safety requirements.
UK Electrical Cable Sizes: 1mm², 1.5mm², 2.5mm² & 6mm²
Complete UK electrical cable size guide: current ratings, uses, and rules for 1mm², 1.5mm², 2.5mm², 6mm², and 10mm² Twin & Earth in domestic circuits.