Tag Archives: Wiring Matters

Wiring Matters – Issue 90 – May 2022

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Lets take a look at what is in the May 2022 issue of Wiring Matters (Issue 90)

BS 7671: Chapter 42 – Protection against fire

With the introduction of the 15th Edition of the IEE Wiring Regulations in 1981 the UK aligned the requirements of the regulations with the International Electrotechnical Commission (IEC) worldwide electrical installation standard IEC 60364.

Coming up: Guide to Earthing and Bonding for AC Electrified Railways

We think readers of Wiring Matters will be interested in the forthcoming publication from IET Codes & Guidance. Guide to Earthing and Bonding for AC Electrified Railways aims to assist infrastructure owners, railway designers and installation contractors in adopting a harmonised approach towards earthing and bonding design philosophy for 25 kV railway infrastructure.

Draft for Public Comment coming soon: Code of Practice for Grid-connected Solar Photovoltaic Systems, 2nd Edition

We are happy to announce that in the coming weeks we will be sending Code of Practice for Grid-connected Solar Photovoltaic Systems, 2nd Edition out for its consultation period.

We want to hear from you

With the introduction of BS 7671:2018+A2:2022 and the updates to the associated publications that come with that, we want to hear from you, our readers. Do you have a question you want answered in a forthcoming article, or maybe you have a particular area that deserves an investigation by our team? Do you want to debate a point made in the past by one of our articles?

Wiring Matters – Issue 89 – March 2022

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Lets take a quick look at what you can expect to find in the Mach 2022 (Issue 89) of Wiring matters.

Resistance readings for Step 3 of the ring final circuit test

Since the First Edition of IET Guidance Note 3 Inspection and Testing, the guidance has been that, for both Step 2 and Step 3 of the test for continuity of ring final circuit conductors, the readings at each point on the circuit will be substantially the same, disregarding parallel paths. But is this always the case? This article digs a little deeper to find out.

DC Realisation in the 21st Century

This article is part two of a four-part series taking us through the history of DC evolution to the benefits of modern-day application.

Insulation Piercing Connectors

There has been a lot of discussion recently on the use of insulation piercing connectors (IPC) as their use has become increasingly popular on consumer installations, particularly for EV charging point installers. In this article we look at the use of this type of product.

Read Here

You can read the full magazine here – https://electrical.theiet.org/wiring-matters/years/2022/89-march-2022/

Wiring Matters – Issue 87 – September 2021

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It’s that time again, here is what you can find in Issue 87 (September 2021) of the IET’s Wiring Matters magazine.

Evaluation and metrics

The design framework of IEC 60364-8-1 provides guidance on a more energy-efficient electrical installation through careful placement of electrical supplies, considered infrastructure design, controls and energy management. All of this is designed to minimise energy loss in the distribution of electricity and reduce energy consumption at the point of use in the electrical installation, whilst still maintaining a suitable and comfortable environment for the end-users.

Electrical Safety Standards in the Private Rented Sector

The IET’s Technical Helpline continues to be inundated with queries relating to the practicalities of implementing the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 (ESSPRS). These place legal requirements on landlords to ensure that every electrical installation in a privately rented residential premise is inspected and tested at intervals of no more than 5 years, by an electrically qualified and competent person.

Myth Busters #7 – Out with the old, in with the new?

The introduction of the 18th Edition of the IET Wiring Regulations (BS 7671:2018) saw a new regulation buried in Section 536 Co-ordination of electrical equipment for protection, isolation, switching and control.

Back to the Forum – Current-carrying capacity of cables buried in the ground

A question that arises periodically on the IET Engineering Communities forum concerns the current-carrying capacity of cables buried in the ground, in particular, the data used to select the appropriate cross-sectional area (CSA) of live conductors.

TT earthing considerations

TT earthing facilities are installed when the distributor does not provide a TN earthing system or when circumstances dictate that a TN earthing system cannot be used. A look at the considerations and what you need to know.

You can take a look at the full edition via the link below –

https://electrical.theiet.org/wiring-matters/years/2021/87-september-2021/

Wiring Matters (Issue 86) July 2021

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This is a look at what’s inside Issue 86 (July 2021) of the IET Wiring Matters magazine.

The framework for energy efficiency in electrical installations

This is Part 2 of Cameron Steel’s 3 part series of articles on energy efficiency in electrical installations.

Setting up a basic electrical maintenance regime

Electrical installations and the components within them are sometimes taken for granted and once installed, have an expectation to provide reliable, continuous service indefinitely.

Hot tubs

The IET has recently received an influx of calls on the helpline regarding the confusion surrounding hot tub installations. In this article, we try and provide clarity by examining the facts available to assist the designer in making an informed decision to avoid finding themselves in hot water.

Back to the Forum – Thermal effects

Discussions on renewable energy have made it to the IET Engineering Communities forum several times recently. Renewable electricity will play a crucial part in achieving ambitious UK Government emission targets, but this will mean an increased maximum demand for electrical installation. In this article, we look at the effects of increased temperature and thermal effects on cables and consumer units.

Arc flash risk management

Details on a health and safety factfile provided by the IET.

View the full Issue 86 (July 2021) of the IET Wiring Matters magazine here

Wiring Matters – Issue 85 [May 2021]

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Here is an overview of what is in the latest edition of the Wiring Matters magazine – Issue 85 [May 2021].

Why have energy efficiency in electrical installations?

A background to Appendix 17 – In summer 2018, BS 7671:2018 (the 18th Edition of the UK’s IET Wiring Regulations) included a new Appendix (17) concerning energy efficiency in electrical installations. The current proposals for Amendment 2 of BS 7671:2018 develop the initial provisions that have been derived from the international standard IEC 60364-8-1 Low Voltage electrical installations – Part 8-1: Energy Efficiency.

With great power comes great responsibility

‘Smart’ is undoubtedly the hot buzzword, both at the wholesalers and when considering options with clients. Domestic and commercial customers are now very aware that there are a host of devices and equipment that can swap out the ‘traditional’ item and offer them greater functionality. These options are increasingly on a par in terms of price, room thermostats being a good example, where Internet of Things (IoT)/Wi-Fi versions are really not much more expensive than their older, physical-button relations.

EICR Myths

Answering some of the most common questions and dispelling the myths associated with the EICR. Since the Electrical Safety Standards in the Private Rented Sector (England) Regulations 2020 came into force on 1 June 2020, the IET technical helpline has been inundated with calls related to the Electrical Installation Condition Report (EICR). This previous IET Wiring Matters article provides further information. In this article, we are going to answer some of the most common questions received and dispel some of the myths associated with the EICR.

Earth leakage

One question being asked in the IET Engineering Communities Forum is ’Earth Leakage Current – How much is too much? This question is being asked more often due to the proliferation of electronic equipment.

Draft for Public Comment for Guide to Implementing Electrified Heat in Domestic Properties

The IET Codes and Guidance team has recently released a draft Guide to Implementing Electrified Heat in Domestic Properties. Prepared for all those involved in this sector, it focuses on all forms of electrified heat as well as other related approaches and technologies.

Elex showcase – discounts, industry forums and more

For those of you missing real-life events, the IET has partnered with Elex to bring you the next best thing – a Virtual Showcase! The showcase offers you everything you’d usually expect to find on the IET stand at an Elex show – discounts on our books and training, the popular IET Industry Forum seminars, and information and webinars around our professional registration offering for the electrical industry, Electrician EngTech.