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

Amendment 2 18th Edition

What you need to know about Amendment 2 18th Edition

What is the 18th Edition?

The 18th Edition Wiring Regulations, also known as BS 7671:2018, pertain to British Standards governing the installation of electrical wiring and systems. In the UK, it ranks as one of the most essential documents for electricians.

The Importance of the 18th Edition

These regulations cover various facets of electrical installation. This makes them a vital reference for numerous professionals within the electrotechnical services industry. Many practitioners in this sector rely on this document to ensure compliance with current electrical regulations. This includes the Electricity at Work Regulations.

Why Does the 18th Edition Require Updates?

As new technologies, processes, and best practices continue to evolve, so do the regulations that provide guidance. The initial iteration of these regulations dates all the way back to 1882 and has since undergone continual updates to mirror 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 rapid pace of change within the electrotechnical industry necessitates revisions and updates in the form of amendments. For example, Amendment 1, released in 2020, introduced entirely new information about electric vehicle charging installations, which was absent from the original 2018 edition.

What’s Different in 18th Edition Amendment 2?

Amendment 2 seeks to expand and concentrate on areas related to new and sustainable technology, including details on efficiency measures and low-voltage (LV) installations. Notable changes highlighted by the Institute of Engineering and Technology (IET), the publishers of the 18th Edition textbook, comprise:

  • A new mandate for Arc Fault Detection Devices (AFDDs) in specific AC final circuits for installations in certain types of higher-risk residential buildings.
  • A requirement for documenting the fire safety design of buildings in cases of specific external influence conditions, such as protected escape routes and locations at risk of fire.
  • A method for determining the necessity of providing overvoltage protection.
  • Modifications to identification, labels, and notices. This affects how safety information is communicated to users of the electrical installation.
  • Introduction of a new chapter on Prosumer’s Low Voltage Electrical Installations.

How Will the Changes from Amendment 2 of the 18th Edition Affect Me?

Designers, specifiers, and installers should thoroughly review the content of Amendment 2 to comprehend its potential impact on their operations. For instance, Type AC RCDs now have limited permitted applications and should not be used on circuits or equipment containing electronic components. This may necessitate a review of designs and specifications to ensure complete compliance.

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