BS 7671 Amendment 4
The Regs and Practice Papers · C&G 2382-26 · Full course section in Plus
BS 7671 doesn't stand still: amendments arrive every few years, and exam candidates are tested on the text. Amendment 4:2026 brings the regulations up to date on technologies the original 18th Edition barely anticipated — battery and energy-storage systems in homes, for ICT equipment, and power over ethernet installations.
The practical risk for learners is stale material: a revision guide printed three years ago quietly teaches superseded answers. Every question on this platform is tagged with the amendment it reflects and retired or updated when the text moves on.
If your exam booking says 2382-26, this is the version of the regulations in front of you on the day.
Free interactive sample
Choose an option, check it and retry here. No account, payment or energy needed. These public samples are separate from the full course and practice papers; progress is not saved.
Original public revision material · A4:2026. For revision only; do not use samples to guide work on site.
Community draft — not yet reviewedWhat this means
This question has not yet been reviewed by a qualified electrician. It is a community draft: check anything you plan to act on against BS 7671 and your own supervisor before you rely on it. Completing it does not make you competent, certified or registered.
Common questions
- Can I try BS 7671 Amendment 4 free on this page?
- Yes. The public sample below accepts answers and gives feedback and retries without an account, payment or energy. It is a short revision sample, not the complete course or a full mock paper. The full course section requires Plus.
- Where does BS 7671 Amendment 4 sit in the City & Guilds scheme?
- BS 7671 Amendment 4 maps to C&G 2382-26. On TradeTraining it lives in the The Regs and Practice Papers section as bite-size lessons with practice questions.
- Do I need BS 7671 Amendment 4 for the 18th Edition exam?
- Yes — the C&G 2382-26 exam is set against the BS 7671, and this topic is part of that ground. The exam is open book, so practising fast navigation to the right regulation matters as much as recall.
- What does Amendment 4 of BS 7671 cover?
- Amendment 4:2026 updates BS 7671 for modern installations — including battery and energy-storage systems, requirements for ICT equipment, and power over ethernet. It supersedes Amendment 3, and C&G 2382-26 exams are set against it.
Explore key terms
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Functional earthing
An earth connection made because equipment needs it to work — a clean signal reference for ICT and electronic systems — rather than for shock protection. It matters now because Amendment 4:2026 of BS 7671 updated the requirements around functional earthing for information and communication technology installations.
Read the full Functional earthing glossary entrySPDSurge Protective Device
A device that diverts brief, high-voltage spikes — from lightning activity or heavy switching — safely to earth before they reach sensitive equipment. Usually fitted at or near the consumer unit, SPDs have moved from a luxury to an expected part of new installations as homes fill with vulnerable electronics.
Read the full SPD glossary entryAFDDArc Fault Detection Device
A protective device that recognises the electrical signature of dangerous arcing — the sputtering current of a damaged cable or a loose terminal — and disconnects the circuit before the arc starts a fire. Ordinary MCBs and RCDs cannot see these faults, because a series arc neither leaks current to earth nor draws obvious overcurrent.
Read the full AFDD glossary entry