Why Has My Socket Stopped Working?
A dead socket can come from an appliance, tripped breaker, damaged connection or power cut. Learn safe checks, warning signs and when to call an electrician.
ElectraSim v1.6: Dark Mode, RCBOs, and Smarter Switching
ElectraSim v1.6 adds dark mode across the app and website, a new RCBO component, a realistic push button, and a clearer simulator comparison guide.
RCD Protection Zones Explained: How to Design a Modern Consumer Unit
Split-load, fully RCBO, whole-board RCD — which layout gives the best protection without constant nuisance trips? This guide explains how RCD protection zones work, how to plan circuit allocation, and what BS 7671 actually requires for new and upgraded consumer units.
How to Install an EV Charger: Dedicated Circuit Guide for Home Charging
Installing an EV charger at home requires a dedicated high-current circuit, PEN fault protection for PME supplies, and often DNO notification. This UK guide covers 7 kW and 22 kW chargers, cable sizing, earthing requirements, and safe installation.
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.
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 disconnect a dangerous earth fault fast enough to save your life. 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.