the-Regs : BS7671 18th Edition Online Training
BS 7671: 18th Edition Wiring Regulations – Study when you want and pass your exam when you're ready…
Arc fault detection devices ‘AFDDs’ are a type of electrical safety device that can help to prevent fires. They work by detecting arc faults, which are small electrical sparks that can occur in faulty or damaged electrical equipment or installations. These arc faults can cause fires if they are not detected and extinguished quickly. Regulation … Read more
05: Cable Size and Protective Device Selection The cable most commonly used in domestic electrical installations is the 70 °C thermoplastic PVC insulated and sheathed flat cable which is often referred to as ‘Twin and Earth’ or ‘T&E’ and is available in various sizes ranging from 1.0 mm² up to 16 mm². As well as … Read more
There are Two Types of Residual Current Device… Residual current operated circuit breaker without integral overcurrent protection – an RCCB Split load consumer units usually contain two RCCBs each protecting multiple circuits within the consumer unit with overload and short circuit protection provided via the individual circuit breakers. Problems can arise when the RCCB within … Read more
Hi, I recently received an email from a student who’d just passed his 17th Edition City & Guilds 2382-15 exam saying… There was only one question that I had absolutely no idea on, it was regarding Circuit breaker Types. I can’t remember the question exactly, but but it was along the lines of “In what … Read more
The17th Edition of the Wiring Regulations gives us methods of fault protection within Part 4 Chapter 41 BS 7671. But firstly what is Fault Protection? Part 2 of BS 7671 Says… “Protection against electric shock under single fault conditions” In plain language this means that fault protection provides us with protection against receiving an electric shock from … Read more