Section 443 of BS 7671:2018+A2:2022 contains requirements for protection against transient overvoltages either of atmospheric origin or due to switching. Where the application of overvoltage protection measures are required, regulation 443.1 specifies that any surge protective devices (SPDs) should be selected and erected in accordance with Section 534 of that standard. This article looks at ...

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Hager’s Technical Training Manager, Paul Chaffers, discusses the importance of providing installations with surge protective devices (SPDs) and looks at requirements and considerations of BS 7671:2018+A2:2022. In our everyday life, we’re surrounded by electrical equipment which may contain sensitive electronic components. Such products are vulnerable to transient overvoltages and can have their lifespan significantly reduced ...

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NAPIT’s Principal Technical Author, Richard Townsend, looks at the importance of surge protection in complex installations. What is a complex installation? When we talk about complex installations, we generally mean those that aren’t simple domestic dwellings or basic commercial installs. That doesn’t mean that all domestic installations are simple installations, nor does it mean all ...

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We discover more about the latest developments in surge protection technology and find out why Mersen’s latest offering could benefit your next installation. Any manufacturing and processing facility with motors stopping and starting, light load panels being turned on and off frequently, and other potential power disturbances is at risk from the damage caused by ...

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Kirsty Johnson MIET, Technical Director at Surge Protection Devices, answers some of the common queries around the use of SPDs following Amendment 2 to the 18th Edition Wiring Regulations. Since the release of the 18th Edition there has been an increase in the use of Surge Protection Devices, and this is only growing with the ...

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With safety and continuity of service paramount in both domestic and commercial settings, FuseBox’s NEW Type 1 surge protection device provides front line protection against direct lightning to complement our Type 2 device. Compatibility Our New Type1 SPD (combined T1, T2 and T3) is suitable for TN, TNC-S, TNC and TT systems. Supplied ready for ...

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The experts at Phoenix Contact look at how the latest amendment to the Wiring Regulations is affecting the use and installation of surge protection. In April of this year, Amendment 2 to the 18th Edition of BS7671 was published. BS7671 is technically not a legal document, but it does provide valuable guidance and information for ...

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Richard Townsend, Technical Development Engineer at NAPIT, considers the changes in surge protection requirements with the introduction of BS 7671:2018+A2:2022. Previously in BS 7671:2018+A1:2020 When surge protective devices (SPDs) took centre stage in BS 7671:2018, they became arguably one of the most significant changes in BS 7671 for some time. Although surge protection had been ...

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Available from specialist distributor Switchtec is the new DAC/DDC range of AC and DC surge protection devices from Citel. Available in Type 1, Type 2 & Type 3, for use with AC, DC and PV applications the SPDs are suitable for use on all earthing system including TN, TT/TN, TNS and TN-C-S. The SPDs are ...

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ECA’s Technical Manager, Gary Parker comments on Regulations around surge protection in the 18th Edition.   A history of SPDs Since their invention in the 1970s (initially patented as the delightfully named Zap Trap), surge protection devices (SPDs) have become essential in many lightning protection systems (LPS).   Nowadays, SPDs are used in electrical installation ...

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