Transient Overvoltage Protection

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. 

“For protection against transient overvoltages”

What are Transient Overvoltage Protection Devices?

Transient Overvoltage Protection devices are often referred to as SPD (Surge Protection Devices).

What does the regulations say?

Transient Overvoltage Protection is a mandatory requirement where overvoltage could result in serious injury or loss of life, interruption of public services, damage to cultural heritage, interruption of commercial or industrial activity or affect a large number of co-located individuals. See 443.4 for further details.

What about other locations?

For all other types of locations and circumstances, a risk assessment must be carried out. If no risk assessment is carried out, then Overvoltage Protection must be provided.

Is overvoltage protection required in domestic residential installations?

Overvoltage Protection is required in single dwelling units where the total value of the installation and the equipment within justifies the protection.

Get more on Transient Overvoltage Protection

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Get the 18th Edition Solution 

Our leading brands have the Surge Protection Devices you need for your next project.

Discover our Surge Protection solutions and further information below.

Wylex

 Consumer Units with Surge Protection Devices  Click here

Wylex

 Consumer Units with Integral Surge Protection Devices  Click here

Wylex

 Surge Protection Device (Distribution Boards Only)  Click here

Wylex

 NEW Integral Surge Protection Kits - Type B Distribution Boards  Click here

Crabtree

 Surge Protection Device (Distribution Boards Only)  Click here

Crabtree

 Starbreaker Consumer Unit with Surge Protection Devices range  Click here

Crabtree

 NEW Integral Surge Protection Kits - Type B Distribution Boards   Click here

 

18th Edition on the Electrium Podcast

We talk the key questions from the 18th Edition on episode two of the Electrium Podcast.

This includes Arc Fault Detection Devices, Transient Overvoltage Protection, RCD Selection and more.

Click the banner below to listen. 

 

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Getting the right 18th Edition solution for you

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

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Get a 18th Edition solution in your area

Our 18th Edition solutions are available to you in your local area thanks to our network of wholesalers and stockists. 

Use our 'Find a Stockist' service to discover your nearest supplier of 18th Edition products from our leading brands such as Crabtree and Wylex.

Find your 18th Edition solution here

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