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…
In this post we are going to cover the often-misunderstood requirements for testing radial single-phase standard socket-outlet circuits here in the UK. A radial socket circuit starts at the consumer unit / distribution board ‘CU/DB’ and ends at the final socket on the circuit. Unlike a ring socket circuit, the wiring does not return to … Read more
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
Overloading your sockets is a common problem at home and can be a serious fire hazard. When you plug too many appliances into a single socket, it can cause the socket to overheat and eventually start a fire. What is Overloading a Power Socket? Overloading a power socket occurs when you plug in too many … Read more
Electrical periodic electrical inspections and testing is essential for identifying any potential hazards that may arise from wear and tear, damage or deterioration of the electrical installation and components. It is important to conduct such inspections in order to comply with the Electricity At Work Regulations (1989) which specify that the safety of people using … Read more
Electricians are poised to lead the clean energy revolution with growing opportunities in green careers. As the world transitions to renewable energy sources, electricians are finding a wealth of new opportunities in green careers. From designing and installing solar arrays to wind turbines, electricians have the skills and experience to become valuable players in this … Read more
RCD description An RCD ‘Residual Current Device’ is an electrical device that monitors the current flowing through either an individual circuit such as an RCBO ‘residual current operated circuit-breaker with integral overcurrent protection’ or multiple circuits within an installation using an RCCB ‘residual current operated circuit breaker without integral overcurrent protection’. Its purpose is to … Read more
Let’s take a look at what are possibly the three most used calculations within the 18th Edition Wiring Regulations for electrical installations. Calculation Voltage Drop Calculating the cross-sectional area of protective conductors Tabulated current carrying capacity of conductors ‘It’ 1. Calculating voltage drop… You won’t find this formula anywhere in BS7671:2018 as this is another … 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
To become an approved domestic electrical installer who can self-certify their own work you will need to be a member of a Competent Person’s Scheme. Published in 2020 and in effect from September 2021 the IET Electrotechnical Assessment Specification sets out the minimum requirements to be met by an electrician and or company in order … Read more
How to connect a 2-way lighting circuit… When a single light needs to be switched on and off from two positions such as on stairs or landings a two-way lighting switch arrangement can be used. The most common and easiest way of doing this is to link both of the light switches together using a … Read more