The electrical industry continues to evolve at a rapid pace, driven by new technologies, changing installation methods, and an increasing focus on safety.
In April 2026, the Institution of Engineering and Technology (IET) and BSI officially published Amendment 4 to BS 7671:2018, the 18th Edition Wiring Regulations, introducing some of the most significant changes seen since the original 18th Edition was released.
For electricians, contractors, and inspectors, understanding these updates is essential. More importantly, maintaining your current qualifications ensures you remain competent, compliant, and competitive within the industry.
Amendment 4 (BS 7671:2018+A4:2026) is the latest update to the UK's national standard for electrical installations. The amendment reflects emerging technologies and modern installation practices, providing guidance on areas that have seen significant growth in recent years.
It can be adopted immediately, with the previous version of the regulations being withdrawn six months after publication.
The amendment applies to:
As the industry continues to embrace renewable energy systems, battery storage, smart buildings, and connected technologies, Amendment 4 ensures that BS 7671 remains relevant and fit for purpose.
One of the most significant additions is the introduction of a dedicated chapter covering stationary secondary batteries used for electrical energy storage.
As battery storage systems become increasingly common alongside solar PV installations, the regulations now provide specific guidance on design, installation, isolation, ventilation, and safety considerations.
Electricians involved in renewable energy installations will need to understand these new requirements to ensure safe and compliant installations.
Amendment 4 introduces a dedicated section covering Power over Ethernet (PoE) systems. PoE technology is increasingly being used to power lighting, security systems, access control, and smart building infrastructure through data cabling.
While PoE may have traditionally fallen outside the day-to-day work of many electricians, its growing use means installers must understand the associated safety requirements, current-carrying capacities, and installation considerations.
Modern buildings rely heavily on information and communication technology systems. Amendment 4 introduces new guidance on functional earthing and equipotential bonding for ICT equipment and systems.
As network infrastructure becomes more integrated with electrical installations, electricians will increasingly encounter these requirements during commercial and industrial projects.
Section 710, covering medical locations, has undergone substantial revision. The updated regulations include enhanced requirements and improved testing documentation relating to supplementary protective equipotential bonding conductors.
For contractors working within healthcare environments, understanding these changes is essential to maintaining compliance and ensuring patient safety.
As an experienced electrician, you may already possess the practical skills needed to carry out installations safely. However, your qualifications demonstrate that your knowledge is both current and aligned with the latest industry standards.
The electrical industry is heavily regulated, and clients increasingly expect contractors to demonstrate up-to-date competence. Holding qualifications based on the latest version of BS 7671 shows that you understand current requirements and best practice.
This is particularly important when undertaking inspection and testing, certification, design work, or specialist installations involving emerging technologies.
Battery storage, electric vehicle infrastructure, smart buildings, and digital systems are becoming commonplace. Amendment 4 reflects this shift by introducing new sections that many electricians may not have covered during any earlier training.
Updating qualifications helps bridge knowledge gaps and ensures electricians can confidently work on modern installations.
Many employers, principal contractors, and accreditation bodies expect electricians to hold current wiring regulations qualifications. As the industry adopts Amendment 4, organisations will increasingly look for evidence that individuals have updated their knowledge accordingly.
For electricians seeking new employment opportunities or progression into supervisory, inspection, or design roles, keeping qualifications current can provide a significant advantage.
Inspection and testing relies heavily on an understanding of the latest regulations. Electrical Installation Condition Reports (EICRs), certification, and fault diagnosis all require practitioners to assess installations against current standards and requirements.
Updated qualifications help ensure consistency, accuracy, and confidence when carrying out these critical tasks.
With Amendment 4 now forming part of the latest version of BS 7671, there has never been a better time to ensure your knowledge is up to date. Whether you're an experienced electrician, electrical contractor, supervisor, inspector or tester, completing an updated 18th Edition qualification demonstrates that you understand the latest regulations and can apply them safely in the workplace.
Our 18th Edition Wiring Regulations + Amendment 4 Course is designed specifically for working electricians who need to stay compliant with the latest industry standards and strengthen their professional credentials.
The course covers the full BS 7671:2018+A4:2026 requirements and provides the knowledge required to confidently work with modern electrical installations.
BS 7671 Amendment 4 introduces important changes covering battery energy storage systems, Power over Ethernet (PoE), ICT earthing requirements and medical installations. Understanding these updates helps ensure your work meets current industry standards.
Many employers, principal contractors, ECS card applications and competent person schemes expect electricians to demonstrate knowledge of the latest Wiring Regulations. An up-to-date qualification helps strengthen your professional profile.
Whether you're carrying out EICRs, certification or fault finding, understanding the latest regulations allows you to assess installations accurately and confidently.
Our trainers have extensive industry experience and deliver practical, relevant training designed for working electricians rather than purely academic study.
At just £395 + VAT, including training, exam and certification, we offer one of the most competitively priced classroom-based Amendment 4 courses available in the UK.
If you want to stay compliant, improve your career prospects and gain a recognised qualification covering the latest BS 7671 Amendment 4 requirements, our team is ready to help.
Call 0161 480 5656 or enquire online today to secure your place on an upcoming 18th Edition Wiring Regulations + Amendment 4 course.