Are you involved directly with heat pump installations or expecting to deal with an existing installation? A better understanding of RCD requirements associated with HPs can save time and money for you and your customers, as Chaz Andrews, Technical Manager at Doepke UK, explains. ASHPs (air source heat pumps) contain large inverters in comparison to ...

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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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Keith Willcock, Product Manager for Siemens Alpha Circuit Protection Products, reviews the implications for designers and installers of electrical installations from the latest requirements for additional protection for socket outlets in BS 7671, including Amendment 2. Regulation 411.3.3 Within Chapter 41 (protection against electric shock) Regulation 411.3.3 now tells us: ‘.. in AC systems additional ...

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In this article, produced for PE before his recent passing, the late Paul Skyrme looks at the relationship between the Electricity at Work Regulations and BS 7671. This article intends to explain the inter-relationship between standards and legislation, using BS 7671 and the Electricity at Work Regulations as the reference point. Firstly, it should remembered ...

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Electrium provides a brief overview of one specific update in the Corrigendum: overvoltage protection. It’s now well documented that the IET has updated certain requirements in Section 443 of BS 7671 Amendment 2. Those requirements relate to providing protection against transient overvoltages of an atmospheric origin or due to switching. The revised requirements of Regulation ...

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The experts at Electrium look at the considerations professionals must be aware of when replacing a new consumer unit, in line with Amendment 2 to the 18th Edition. Replacing a consumer unit is classed as an alteration to the electrical installation. Alterations and additions are categorised as ‘new work’ and all new work on an ...

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The Institution of Engineering and Technology (IET) and BSI have announced the release of a Corrigendum to BS 7671:2018+A2:2022. The Corrigendum will make changes to five areas of BS 7671 and will come into effect immediately. It will be available for free to download from the IET and BSI. Areas of change include: – Regulation ...

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The technical experts at NAPIT answer a contractor query related to the use of earth electrodes in the wake of Amendment 2. Q. Do we have to install an additional earth electrode for all TN systems now Amendment 2 is in force? Within BS 7671:2018+A2:2022, Regulation 411.4.2 provides requirements regarding the connection of exposed-conductive-parts of ...

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Following Amendment 2 to the 18th Edition Wiring Regulations, the team at Electrium provide us with more detail as to the correct use of RCBOs in the workplace. In the workplace power continuity is an important factor. Business services must not be interrupted by unwanted power outages. That’s why RCBOs (Residual Current Breaker with Over-Current) ...

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