IET Codes and Guidance

Guide to Electrical Safety Management in the Water Sector

Thu, 11 Dec 2025 09:54:42 GMT

This guide seeks to establish a common approach to electrical safety management and compliance in the water sector. It should be used and integrated into an organization's overall management systems in accordance with the Health and Safety at Work Act 1974, to further aid the development of electrical safety management procedures, ensuring that electrical-related works are undertaken in a safe and controlled manner.

Key aims and objectives of the publication are to:

Ensure safe control of electricity to prevent harm or damage
Prevent uncontrolled release of electrical energy
Assist with alignment of training requirements
Provide guidance on how to develop a robust electrical safety management system in the water sector
Ensure co-ordination and collaboration with the supply chain and third parties across all electrical working boundaries and demarcation of electrical systems
Offer an insight into the specific hazards and procedures associated within the water sector.

Guide to Electrical Safety Management in the Water Sector (e-book)

Thu, 19 Feb 2026 08:57:00 GMT

This e-book is available through the IET's digital Wiring Regulations platform. Once you have completed your purchase, details of how to download and access your package will be sent to you following your order confirmation. Please note, this may take up to 24 hours.

Key aims and objectives of the publication are to:

Ensure safe control of electricity to prevent harm or damage
Prevent uncontrolled release of electrical energy
Assist with alignment of training requirements
Provide guidance on how to develop a robust electrical safety management system in the water sector
Ensure co-ordination and collaboration with the supply chain and third parties across all electrical working boundaries and demarcation of electrical systems
Offer an insight into the specific hazards and procedures associated within the water sector.

Guide to Prosumer Electrical Installations

Fri, 19 Sep 2025 12:24:05 GMT

The purpose of this guide is to provide designers, installers, and practitioners with a clear understanding of the requirements and typical modes of operation for a prosumer's electrical installation (PEI). It outlines the terminology and design philosophy of a PEI, including its various types and modes of operation, and explains the integration of its components. Additionally, the guide offers insights into potential electrical safety issues associated with a PEI and details the specific requirements of BS 7671 to mitigate these risks. It also discusses the technical challenges related to PEI and describes the role of energy management systems and the necessary interfaces to optimize the operation of a PEI.

The scope of this guide includes, but is not limited to:

Fixed low voltage electrical installations, typically in or directly connected to buildings;
Grid connection with smart metering;
On-site generation, such as photovoltaic panels, wind turbines, and hydro turbines;
Battery energy storage systems;
Energy management systems.

This guide draws on the content within BS 7671:2018+A2:2022+A3:2024, associated British Standards, IEC documents and standards, other IET Codes and Guidance titles, and relevant industry documents.

Guide to Prosumer Electrical Installations (e-book)

Tue, 16 Dec 2025 13:44:35 GMT

The scope of this guide includes, but is not limited to:

Fixed low voltage electrical installations, typically in or directly connected to buildings;
Grid connection with smart metering;
On-site generation, such as photovoltaic panels, wind turbines, and hydro turbines;
Battery energy storage systems;
Energy management systems.

This guide draws on the content within BS 7671:2018+A2:2022+A3:2024, associated British Standards, IEC documents and standards, other IET Codes and Guidance titles, and relevant industry documents.

Guide to Implementing IoT Solutions

Mon, 07 Apr 2025 12:12:01 GMT

The IET Guide to Implementing IoT Solutions provides valuable guidance for businesses and organisations in understanding the key issues to consider when implementing IoT into their processes.

The guide clearly illustrates how IoT can be effectively used to benefit a process - and highlights how to avoid the pitfalls. Besides explaining all the fundamental issues to consider, it provides real-world examples of IoT implementations, highlighting the many lessons learnt during the process.

Contents include:

IoT architecture
Networks
Wider data aspects
Standards and industry alliances
Security, privacy and ethics
The digital customer journey and IoT productization
Real life implementation use cases
The future of IoT

The guide also points towards many emerging technology trends and provides a whole range of relatable case studies in manufacturing, smart homes, smart cities, defence and mining.

Whether you want to improve customer experience and insights, locate areas of waste reduction or introduce new business models, this guide will help you with your challenge. It has been written specifically for managers, engineers and network/enterprise architects setting out what you really need to know to implement IoT within your organisation.

Guide to Implementing IoT Solutions (e-book)

Fri, 13 Jun 2025 08:44:57 GMT

The IET Guide to Implementing IoT Solutions provides valuable guidance for businesses and organisations in understanding the key issues to consider when implementing IoT into their processes.

Contents include:

IoT architecture
Networks
Wider data aspects
Standards and industry alliances
Security, privacy and ethics
The digital customer journey and IoT productization
Real life implementation use cases
The future of IoT

The guide also points towards many emerging technology trends and provides a whole range of relatable case studies in manufacturing, smart homes, smart cities, defence and mining.

Electrician's Guide to Domestic Electrical Energy Storage Systems

Fri, 14 Feb 2025 08:43:08 GMT

This publication provides practical, on-site, hands-on, guidance on the installation of domestic electrical energy storage systems specifically looking at:

Benefits and limitations of domestic electrical energy storage systems
Planning permissions and consents
Electrical design, system arrangements and schematics
Fire safety and electrical safety specifically in relation to domestic battery installations
Data communications and control and monitoring
Inspection, testing and commissioning
User and maintenance instructions

Intended to be used in conjunction with the IET Code of Practice for Electrical Energy Storage Systems along with BS 7671, it will be of particular interest to training providers, certification and awarding bodies, electrical contractors, electrical installers and new entrants into the industry.

Electrician's Guide to Domestic Electrical Energy Storage Systems (e-book)

Mon, 07 Apr 2025 12:51:33 GMT

This publication provides practical, on-site, hands-on, guidance on the installation of domestic electrical energy storage systems specifically looking at:

Benefits and limitations of domestic electrical energy storage systems
Planning, permissions, and consents
Electrical design, system arrangements and schematics
Fire safety and electrical safety specifically in relation to domestic battery installations
Data communications and control and monitoring
Inspection, testing and commissioning
User and maintenance instructions

Guide to Electric Vehicle Charging Installations at Filling Stations, 2nd Edition

Mon, 07 Apr 2025 12:09:52 GMT

As part of the rapid growth and development of the whole electric vehicle charging infrastructure, filling stations are seen as an obvious place to provide charging facilities. However, it is recognised that difficult safety and logistical issues are linked to such installations.

With the publication of the 5th Edition of the Code of Practice for Electric Vehicle Charging Equipment Installation there have been various technical developments to help clarify the safety issues that needed to be addressed in this area. APEA (the Association for Petroleum and Explosives Administration) who represent the major stakeholders in this sector have again collaborated with the IET in issuing this joint publication to help provide important guidance in this area.

Guide to Electric Vehicle Charging Installations at Filling Stations, 2nd Edition (e-book)

Mon, 07 Apr 2025 12:49:13 GMT

Code of Practice for Electrical Energy Storage Systems, 3rd Edition

Thu, 18 Jan 2024 15:52:34 GMT

Electrical Energy Storage Systems (EESS) provide storage of electrical energy so that it can be used later. EESS may be installed for a variety of reasons, for example increasing the 'self-consumption' of buildings fitted with renewable energy systems; arbitrage services; ancillary services and providing a back-up or alternative power supply.

This Code of Practice looks at EESS applications and provides information for practitioners to specify safely and effectively, design, install, commission, operate and maintain a system.

The scope of this Code of Practice includes EESS intended for fixed installation applications including:

individual dwellings,
commercial applications, including multi-occupancy buildings and multi-occupancy residential buildings,
industrial applications,

and covers:

electrochemical energy storage systems in electrical installations,
integration into low voltage (LV) power systems (AC and DC) and,
systems aligned with existing standards, regulations, and guidance.

This third edition looks to build on the success of the previous edition, bringing it up to date with the latest developments in the electrical energy storage market. Additions to the third edition include:

An update to the requirements for island mode isolators,
Further guidance on fire safety and the location of batteries within an installation,
Updates to schematics for domestic use,
General update to the presentation of diagrams.

Code of Practice for Electrical Energy Storage Systems, 3rd Edition (e-book)

Wed, 10 Apr 2024 10:20:31 GMT

This Code of Practice looks at EESS applications and provides information for practitioners to specify safely and effectively, design, install, commission, operate and maintain a system.

The scope of this Code of Practice includes EESS intended for fixed installation applications including:

individual dwellings,
commercial applications, including multi-occupancy buildings and multi-occupancy residential buildings,
industrial applications,

and covers:

electrochemical energy storage systems in electrical installations,
integration into low voltage (LV) power systems (AC and DC) and,
systems aligned with existing standards, regulations, and guidance.

An update to the requirements for island mode isolators,
Further guidance on fire safety and the location of batteries within an installation,
Updates to schematics for domestic use,
General update to the presentation of diagrams.

Code of Practice for Electric Vehicle Charging Equipment Installation, 5th Edition

Mon, 24 Jul 2023 10:34:19 GMT

This well established and authoritative IET Code of Practice provides a clear explanation of electric vehicle charging equipment and installation. It sets out the considerations and planning needed in advance and the necessary physical and electrical requirements during the installation process. It also details what needs to be considered when undertaking electrical work on charging equipment in various different locations - such as domestic dwellings, on-street locations, and commercial and industrial premises.

Key changes to the code for the 5th edition include:

full alignment with BS 7671:2018+A2:2022 and the latest guidance in ENA Engineering Recommendation G12/4.
a substantially updated section on "Vehicle as Storage" including prosumer's electrical installations.
legislative changes reflecting:
- new regulations covered in the Smart Charging Regulations 2021.
- changes to Part S of the Building Regulations 2022.
- physical installation requirements and accessibility for Part M of the Building Regulations and PAS 1899 guidance.
- changes made within the latest amendment to BS7671.
new guidance on the installation of telecommunications and auxiliary cabling.
revising the requirements of a simultaneous contact assessment to accommodate a mix of earthing arrangements.
considerations for Fire Safety in EV charging installations (recognizing RiscAuthority publication RC59) for domestic and commercial properties.
new and updated appendices covering:
- installation practices for earth electrodes.
- Mode 4 charging equipment including details of pantograph connectivity systems for HGV and PSV.
- guidance regarding the minimum depth of buried cables and minimum height of overhead suspended cables in different environments.
extended guidance covering earth fault loop impedance and RCD testing, including use of vehicle simulators for Mode 3 charging equipment, and testing in prosumer's electrical installations.
an expanded DNO Notification section to include for V2G and V2H applications.
updated guidance on inductive charging installations.

Developed by a technical committee of industry experts the Electric Vehicle Charging Equipment Installation - Code of Practice is essential reading for all installers of EV charging units and will also be of real value to all those involved in decisions regarding the rapidly developing EV charging infrastructure landscape.

Code of Practice for Electric Vehicle Charging Equipment Installation, 5th Edition (e-book)

Mon, 11 Sep 2023 10:56:01 GMT

Key changes to the code for the 5th edition include:

full alignment with BS 7671:2018+A2:2022 and the latest guidance in ENA Engineering Recommendation G12/4.
a substantially updated section on "Vehicle as Storage" including prosumer's electrical installations.
legislative changes reflecting:
- new regulations covered in the Smart Charging Regulations 2021.
- changes to Part S of the Building Regulations 2022.
- physical installation requirements and accessibility for Part M of the Building Regulations and PAS 1899 guidance.
- changes made within the latest amendment to BS7671.
new guidance on the installation of telecommunications and auxiliary cabling.
revising the requirements of a simultaneous contact assessment to accommodate a mix of earthing arrangements.
considerations for Fire Safety in EV charging installations (recognizing RiscAuthority publication RC59) for domestic and commercial properties.
new and updated appendices covering:
- installation practices for earth electrodes.
- Mode 4 charging equipment including details of pantograph connectivity systems for HGV and PSV.
- guidance regarding the minimum depth of buried cables and minimum height of overhead suspended cables in different environments.
extended guidance covering earth fault loop impedance and RCD testing, including use of vehicle simulators for Mode 3 charging equipment, and testing in prosumer's electrical installations.
an expanded DNO Notification section to include for V2G and V2H applications.
updated guidance on inductive charging installations.

Checklists and Risk Assessments for the Code of Practice for Electric Vehicle Charging Equipment Installation, 5th Edition

Tue, 16 Jan 2024 14:10:19 GMT

These revised documents allow you to download and keep PDF versions of the checklists and risk assessments within Annexes B C and D of the code to use on multiple occasions, saving the cost and time of producing a new version each time you need one. Any of the documents can be completed on screen and can also be circulated electronically or printed off for customer or internal use.

The full code of practice sets out the considerations and planning needed in various different locations - such as domestic dwellings, on-street locations, and commercial and industrial premises. These revised checklists are in line with the 5th edition of the code. These PDF documents will save you invaluable time on completing checklists and risk assessments for installations; it looks professional and gives you a clear electronic audit trail.

Code of Practice for Grid-connected Solar Photovoltaic Systems, 2nd Edition

Thu, 29 Sep 2022 10:18:12 GMT

This Code of Practice sets out the requirements for the design, specification, installation, commissioning, operation, and maintenance of grid-connected solar photovoltaic (PV) systems.

Key safety considerations in the protection and earthing of PV systems mounted on buildings and on the ground is covered in detail. It also contains requirements for commissioning, monitoring and maintenance throughout the lifetime of an installation. It is an invaluable resource for technicians and supervisors who may be responsible for overseeing solar PV systems deployment.

This second edition provides updated information to ensure that a solar PV system is designed, competently installed and safe to operate in compliance with current national and international standards - including alignment to BS 7671:2018+A2:2022 and other relevant industry standards.

Code of Practice for Grid-connected Solar Photovoltaic Systems, 2nd Edition (e-book)

Tue, 22 Nov 2022 11:35:51 GMT

This Code of Practice sets out the requirements for the design, specification, installation, commissioning, operation, and maintenance of grid-connected solar photovoltaic (PV) systems.

Code of Practice for Electrical Safety Management, 2nd Edition

Fri, 07 Oct 2022 10:39:39 GMT

The aim of this Code of Practice is to provide good practice guidance to enable individuals and their organisations to have a level of knowledge and understanding to manage the risks associated with an electrical system. There are many technical publications that provide guidance on certain aspects of electrical safety but not in a way that provides a process for managing electrical safety.

In achieving this aim, the Code of Practice has the following objectives:

To provide the good practice practical guidance in the form of a self-assessment framework so that the user can follow a systematic approach to understanding the management of various aspects of an electrical system for their organisation.
For the guidance to be understood and usable by a broad range of individuals technical and non-technical disciplines in any country.
To enable the end user to create and implement an effective electrical safety management system where nothing is currently in place or to enhance an existing system.

It has been updated to include considerations around the management of change, the implications of outsourcing work on the electrical equipment and installations, and an updated self-assessment tool to identify what systems exist and how effective they are in managing responsibilities.

Code of Practice for Electrical Safety Management, 2nd Edition (e-book)

Thu, 19 Jan 2023 11:38:41 GMT

In achieving this aim, the Code of Practice has the following objectives:

To provide the good practice practical guidance in the form of a self-assessment framework so that the user can follow a systematic approach to understanding the management of various aspects of an electrical system for their organisation.
For the guidance to be understood and usable by a broad range of individuals technical and non-technical disciplines in any country.
To enable the end user to create and implement an effective electrical safety management system where nothing is currently in place or to enhance an existing system.

Guidance Framework for Competence Management (e-book)

Wed, 14 Dec 2022 09:11:00 GMT

Competence involves much more than technical training; it includes a person's attitude and behaviour, as well as their experience and knowledge, and it's hugely important to all engineering organisations and those involved in engineering projects. Employing the right people, safety considerations, winning tenders, having effective succession plans, and identifying training needs and promotion opportunities are all drivers for having a strong competence scheme in place.

This guide provides a framework for a Competence Management System (CMS) that's simple and has a focus on practicable implementation. The guidance is aimed at all enterprises involving activities associated with engineering disciplines such as design, installation, operation, maintenance, manufacture, inspection, testing and training. The framework has been designed to allow adaptation to meet the specific requirements of individual organisations or projects.