18th Edition

The 18th Edition of the Wiring Regulations is here.

Published on 1st July 2018, for the moment you can use either the 17th or 18th Edition regulations, but from the 1st January 2019 the new regulations must be used in all designs and installations.

The 18th Edition of the IET Wiring Regulations presents some new opportunities for the industry from the changes. These provide further safety measures for installers to provide for their customers as well as a focus on energy efficiency.

Here at Electrium we're putting together a host of content that will give you insight on the latest changes and we will have some new products which will help you to comply. We’ll be looking closely at Arc Fault Detection Devices (AFDDs), Surge Protection and RCD's.

During the next few weeks we'll be sharing some of the key changes in the 18th Edition on the sliders above, with more topics added each week.

Check out the links below and see what we have to say about the 18th Edition.

This area is here for information purposes. Designers and installers should obtain their own copy of BS7671:2018 and follow the requirements and recommendations in the 18th Edition of the IET Wiring Regulations.  

Order your copy here. 

The latest edition to the wiring regulations, the 18th Edition, has brought about changes which will affect what you do.

We've put together some of the key changes that you need to know. Get some insight with the boxes below.



AFDDs are a new addition to the 18th Edition of the Wiring Regulations and have been included to provide protection against arc faults that can lead to electrically ignited fires. Arc Fault Detection Devices have been recommended for this purpose. There are requirements within the 18th Edition to protect against arching and burning, insulation faults, arcs, sparks and high temperature particles.

Why Arc Fault Detection?

It's an important part of your next installation and can provide further safety to your clients. 

Watch our demonstration video below on how Arc Fault Detection Devices work.

We've also gone into further detail to explain why AFDDs can benefit your next project and why should you be wary of arcing in our feature below.


Find out more

Find out what you need to know about AFDDs below.


 Domestic Circuit Protection & AFDD Solutions - Catalogue  Click here


 Arc Fault Detection Devices - Brochure  Click here


 VIDEO - Benefits and Features of Wylex AFDDs.  Watch here


 AFDD Product References  Click here


 AFDD Product References  Click here


 How to pick the right consumer unit and what to put in it   Click here
 Crabtree  Starbreaker Consumer Units and Devices - Brochure  (Aug 2018)  Click here
 Crabtree  Starbreaker Protective Devices - Brochure  Click here
 Crabtree  How AFDDs can benefit your next installation.  Click here
 Crabtree  Why Crabtree has your AFDD Solution  Click here
 Crabtree  VIDEO - Benefits and features of Crabtree AFDDs.  Watch here


Within the 17th Edition of the Wiring Regulations, the requirements of surge protection were determined through risk assessment methods.

Now, overvoltage protection must be provided in certain circumstances. For example, where there is risk of serious injury, where there is a risk of loss of human life or a large number of co-located individuals are affected, where there is an interruption to public services and where there is an interruption to commercial or industrial activity. Other requirements are contained in 443.4

For circumstances where overvoltage protection is not required, a risk assessment can be carried out. If a risk assessment is not carried out, overvoltage protection must be provided. 

Find out more about surge protection devices below.

 Wylex  SPD Solution (Distribution Boards) Click here
 Wylex  Requirements for Overvoltage Protection  Guide Click here
 Wylex  Why using Surge Protection will add value to  your business. Click here
 Wylex  Surge Protection Product References Click here
 Crabtree  Requirements for Overvoltage Protection  Guide Click here
 Crabtree  Surge Protection Product References Click here



We'll have more on Residual Current Devices (RCDs) in the 18th Edition coming soon.

Keep checking back.


We have solutions to help you comply with the 18th Edition of the Wiring Regulations.

Our colleagues are based throughout the UK, and have local knowledge of your area. Chat with our team today and see how we can help you deliver your next project above and beyond your clients expectations.

Find a colleague in your local area here.


Get the latest 18th Edition Info

Sign up to our newsletter and get all the latest information for our leading brands, including content on the 18th Edition of the Wiring Regulations.

Click here to sign up. 

Why choose anything less?

There are so many reasons to choose Wylex for your next project.

See our rubix cube and watch some of the reasons to choose Wyles for your next installation.

Discover more reasons at wylexreasons.co.uk.


Putting the 'Social' in Social Media

Why not follow us on social media and let's continue the chat.

Just click, follow and enjoy.

Twitter            Facebook            LinkedIn

General Enquiries
01543 455000
Place an Order