Originally published on UK&I Electricians Blog by VictoriaSwift | March 16, 2021 05:26 PM
Watch this session to learn about how BS 7671:2018 changed the focus around surge protection and brought new requirements for SPDs.
Presented by Deepak Sharad, Offer and Development Manager for Final Distribution.
> Watch webinar
> Download presentation
> Find out more about surge protection and how we can support your installations
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Hello,What devices are available and how should they be wired? Are they modular mounted within the consumer unit?
SPDs are wired in parallel. We have them available in both our residential and commercial solutions across a number of our ranges. We have populated boards where surge protection is integrated into the design, taking the onus away from the installer. You can find out more here.
Question from live webinar:
Q: Most homes already have surge protection extension leads to protect sensitive equipment and comprehensive house insurance, so why would they spend £300 on a whole house Surge Protection Device?
A: Don't forget to account for devices which may not be seen as 'sensitive', such as boilers and other devices which have electronic components within them. Surge protection extension leads only give isolated protection.We understand that some customers may need convincing of the benefits of SPDs, so we created this guide to help explain what surge protection is and why it's a worthwhile investment.
Q: Can you tell the type of a third party SPD?
A: This should be within the manufacturer data accompanying the product or on the device itself.
Q: Can you install any brand of SPD in any brand of distribution board?
A: BEAMA industry guidance states that only the manufacturer's range of devices should be used within their system.
Q: Does one SPD cover the whole board?
A: This depends on the level of protection required, but yes usually one device would cover the whole board.
Q: How many overcurrents can an SPD take within its lifetime?
A: The lifetime of an SPD is finite. There is an indicator on the device to tell you when it's at end of life, and at that point it would need to be replaced.
Q: Will mains switches have surge protection built into them?
A: The mains switch itself is only an isolator, so the answer is no, you need a separate SPD.
Q: What are the practicalities of installing SPDs in terms of the restricted space in most houses?
A: There is a requirement in BS 7671 on the cable length connected to the SPD, so there is a limitation - it needs to be as close as possible to the incoming part of the board, and no more than 50cm long.
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