What you need to know about Amendment 2 18th Edition - Pulse Electrix Ltd
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What you need to know about Amendment 2 18th Edition

What is the 18th Edition?

18th Edition Wiring Regulations (BS 7671:2018) refer to British Standards relating to the installation of electrical wiring and systems. It is considered one of the most important documents that electricians can own in the UK.

As the regulations cover various aspects of electrical installation it remains an important textbook for many working within the electrotechnical services industry. Many professionals within the sector refer to it, to ensure compliance with up-to-date electrical regulations such as Electricity at Work Regulations.

 

Why does the 18th Edition require updating?

As new technologies, processes and best practices continue to evolve so too do the regulations that guide them. The first iteration of such regulations were published all the way back in 1882 and have since been continually updated to reflect changes in the world around us.

While the current BS7671:2018 Wiring Regulations (first published in 2018) remains the most up to date standard, the pace of change within the electrotechnical industry means that revisions and updates need to be made from time to time in the form of amendments. Amendment 1 released in 2020, as an example, included entirely new information around electric vehicle charging installations, not included within the original 2018 edition.

 

What’s different in 18th Edition Amendment 2?

Amendment 2 seeks to expand and focus on areas within new and sustainable technology including information around efficiency measures and low-voltage (LV) installs.

The main changes highlighted by the Institute of Engineering and Technology (IET) who publish the 18th Edition textbook, include:

  • a new requirement for Arc Fault Detection Devices (AFDDs) in some AC final circuits for installations in some types of higher risk residential buildings
  • the requirement for the fire safety design of buildings to be documented where specific conditions of external influence exist, such as protected escape routes and locations with risk of fire
  • method for determining the requirement to provide overvoltage protection
  • changes to identification, labels and notices, such as for consumer units, affecting how safety information is provided to the user of the electrical installation
  • a chapter on Prosumer’s Low Voltage Electrical Installations, in a new chapter.

 

How will the changes from Amendment 2 of the 18th Edition affect me?

Designers, specifiers and installers need to see the full content of Amendment 2 to understand how the changes may affect their business. For example, Type AC RCDs now have limited permitted applications and should not be used on any circuit or equipment with any electronic components. It may be necessary to review designs and specifications in order to ensure full compliance.



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