Chapter 64, Initial verification. It’s what you need to do to verify compliance with BS7671 of new electrical installations

This section outlines the relevant tests that must be performed on any installation prior to it being energized.

Chapter 35: Safety services. What safety services ‘fire alarm, emergency lighting etc’ are going to be within the installation and how are they going to be supplied. Time/current characteristic of overcurrent protective devices (informative). Maximum loop impedance Zs calculation and maximum measured loop impedance calculation ‘80% rule’. Time/current characteristics graphs for overcurrent protective devices.

Questions often use terminology that alludes specifically to certain parts of the 18th edition book. If the information in these particular sections do not form part of your response, it’s highly likely that you will have set out on the wrong course of direction. However, if you have a solid working knowledge, this element of the exam’s approach will be a help rather than hinderance. Modifications have been made to Regulation Group 543.7 concerning earthing requirements for the installation of equipment having high protective conductor currents. Is all about the book. What BS7671 does and does not apply to (Chapter 11 ‘Scope’) along with the purpose of the regulations (Chapter 12 ‘Object’) and the basic principles that all electrical installations should adhere to (Chapter 13 ‘Fundamental Principles’).

Part 6, Inspection and testing. Remember, this Part doesn’t go into details on how to physically complete inspection and testing, it’s all about the requirements. Part 3: Assessment of general characteristics. I like to think that Part 3 as all the things you would need to consider if you were designing an electrical installation from scratch.

Definitions – multiple source, DC and other systems (informative). Multiple sources for installation supplies, including DC.Section 411 contains a number of significant changes. Some of the main changes are mentioned below.

Understanding how to use the Wiring Regulations is recognised across the industry as an increasingly important skill. For that reason, there is a recognised qualification that tests your ability to use the 18th Edition book. Has much changed since the 17th Edition?Post-Brexit, this Amendment sees the further adoption of CENELEC Harmonized Documents as the UK continues the inclusion of standards for new and developing technologies. Chapter 43: Protection against overcurrent. Methods of protecting individual circuits from the effect of overload/fault currents including which and when circuits won’t need overcurrent/fault current protection. With so many changes afoot, it is easy to see the importance of maintaining and updating your knowledge of the Regs as an electrotechnical professional. 18th Edition Book in Practice This section includes changes to automatic disconnection of supply and additional protection. Section 717 - Mobile or transportable units Regulation 411.4.2 now recommends an additional connection to Earth, by means of an earth electrode in accordance with Chapter 54, is made to the main earthing terminal. Chapter 42 Protection against thermal effects