Technical Support Archives

Ventilation system design: How to design and specify MVHR systems | National Ventilation

|Date: 16 July, 2024

Ventilation system design: How to design and specify MVHR systems | National Ventilation

Rhys Jones, National Technical Manager at National Ventilation, explains how ventilation system design ca ...

Rhys Jones, National Technical Manager at National Ventilation, explains how ventilation system design can be made simple for electricians who are keen to install MVHR but aren’t sure how to design an ...

16 July, 2024
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When is it necessary to use fused test leads? | NICEIC

|Date: 10 July, 2024

When is it necessary to use fused test leads? | NICEIC

Most electricians might assume that the use of fuse-protected leads is unnecessary when carrying out ‘dea ...

Most electricians might assume that the use of fuse-protected leads is unnecessary when carrying out ‘dead’ testing on circuits proven to be de-energised by a recognised safe isolation procedure. Equa ...

10 July, 2024
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Test sequence for periodic inspection | NICEIC

|Date: 28 June, 2024

Test sequence for periodic inspection | NICEIC

BS 7671 contains clear requirements in respect of the order in which many tests have to be carried out du ...

BS 7671 contains clear requirements in respect of the order in which many tests have to be carried out during initial verification. However, no such information is given in respect of testing carried ...

28 June, 2024
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How to determine voltage drop limits within electrical installations | NAPIT

|Date: 26 June, 2024

How to determine voltage drop limits within electrical installations | NAPIT

Frank Bertie, Chief Technical Officer at NAPIT, explains how to establish voltage drop limits within elec ...

Frank Bertie, Chief Technical Officer at NAPIT, explains how to establish voltage drop limits within electrical installations. BS 7671 and requirements for voltage drop The topic of voltage drop is co ...

26 June, 2024
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Determining selectivity for circuit-breakers conforming to BS EN 60898

|Date: 21 June, 2024

Determining selectivity for circuit-breakers conforming to BS EN 60898

Jake Green, Head of Technical Engagement at Scolmore Group, briefly considers one aspect of selectivity a ...

Jake Green, Head of Technical Engagement at Scolmore Group, briefly considers one aspect of selectivity as it relates to overcurrent protective devices (OCPD), and in particular circuit-breakers confo ...

21 June, 2024
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18th Edition RCD Requirements for Heat Pump Installations | Doepke

|Date: 14 June, 2024

18th Edition RCD Requirements for Heat Pump Installations | Doepke

Are you involved directly with heat pump installations or expecting to deal with an existing installation ...

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 yo ...

14 June, 2024
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Mythbusting: The use of flexible cables in fixed installations

|Date: 14 June, 2024

Mythbusting: The use of flexible cables in fixed installations

In this article, originally written for the IET Wiring Matters publication, James Eade looks to dispel so ...

In this article, originally written for the IET Wiring Matters publication, James Eade looks to dispel some of the myths surrounding the use of flexible cables in fixed installations. The content for ...

14 June, 2024
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What are the requirements for disconnecting all live conductors? | Hager

|Date: 12 June, 2024

What are the requirements for disconnecting all live conductors? | Hager

Hager's Technical Training Manager, Paul Chaffers, shares the importance of observing protective device t ...

Hager's Technical Training Manager, Paul Chaffers, shares the importance of observing protective device terminal markings and discusses the requirements for disconnecting all live conductors, includin ...

12 June, 2024
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The Training Ground: what certificates should apprentices get when they complete their AM2S?

|Date: 29 May, 2024

The Training Ground: what certificates should apprentices get when they complete their AM2S?

Q. My apprentice has completed his AM2S but I’ve not got the apprenticeship certificate yet. Why is this? ...

Q. My apprentice has completed his AM2S but I’ve not got the apprenticeship certificate yet. Why is this? There can often be confusion around which certificates NET issue directly and what is issued b ...

29 May, 2024
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How to navigate electrical reflections in circuits

|Date: 28 May, 2024

How to navigate electrical reflections in circuits

John Hayhurst, Electrical Tutor at City Skills SCC, provides a guide to navigating electrical reflections ...

John Hayhurst, Electrical Tutor at City Skills SCC, provides a guide to navigating electrical reflections in circuits. In this article, I’m looking to challenge your grasp of electromagnetism and expl ...

28 May, 2024
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