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…
The often misunderstood regulation concerning fires and cable supports… Recently I was speaking to a builder who had been refurbishing an old terraced house and he was telling me about the electrician who completed the rewire. The ceilings on the ground floor had been removed but were going to be re-boarded once the electrics and … 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
In order to provide a snapshot on its condition a Periodic inspection and test is completed on an existing electrical installations and a judgement is made by the peson conducting the inspection and test as to whether or not the installation is in a satisfactory condition and can be used safely. The results of inspection … Read more
Socket Rings: Three separate ring circuits are often used for sockets around the home, one upstairs, one downstairs and one for the kitchen. Each separate ring is fed from the consumer unit via an individual 32A type B circuit breaker and a separate 30mA RCCB via a split load board or a combined 32A/30mA RCBO … Read more
Isolation and Switching in Domestic Kitchens… Let’s take a look at a few definitions first… Isolation: Function intended to make dead for reasons of safety all or a discrete section of the electrical installation by separating the electrical installation, or a section thereof, from every source of electrical energy. Emergency Switching: An operation intended to … Read more
…using your online 18th Edition course here at the-regs.co.uk Follow these steps and join our ever growing list of exam passers here at the-Regs… To get started… We have two online 18th Edition courses for you to choose from. Our most popular is the Full 18th Edition course. This covers the whole of the 18th … Read more
Three 18th exam questions that cause problems… 1) What is the minimum dimension for a round diameter bonding ring network conductor when considering measures against electromagnetic disturbances? 25mm, 10mm, 8mm or 3mm It’s 8mm – take a look at 444.5.3 (ii) 2) Which one of the following external influences codes for ambient temperature is conventionally … Read more
For our 18th Edition online courses here at the-regs.co.uk and partPtrained.co.uk we currently have 28 City & Guilds exam venues and 7 EAL exam venues – “Covering the whole of the UK, from Exeter to Aberdeen and everywhere in-between!” Recently, I have noticed that some training centres are dropping City & Guilds altogether and switching … Read more
As current flows through a conductor due to it’s electrical resistance it produces heat. If the current in the conductor increases then the heat also continues to rise and eventually we could reach a temperature which will cause permanent damage to the cable or possibly even a fire within the installation. In order to prevent … Read more
Why on a TN-S earthing system is the maximum Ze given as 0.8 ohms by the supply authority when it’s often protected by a BS 88-3 100A fuse which has a maximum Zs of 0.38 ohms? This maximum value for Ze of 0.8 ohms for a TN-S earthing system is a value that is quoted … Read more