18th Edition Mock Exam
The Regs and Practice Papers · C&G 2382-26 · First full paper free as a guest; more papers in Plus
The 18th Edition exam (C&G 2382-26) is open book: BS 7671 sits on the desk with you. For many people the hard part isn't the knowledge, it's navigation — spending four minutes hunting for the right regulation on a two-minute question. Timed mocks train the finding, not just the knowing.
Our mock exams are built to the real shape — 60 questions, one answer from four options each, 120 minutes, all seven parts of the regulations plus the appendices in scope — and every question is written originally by us, tagged to the amendment it reflects, and updated when the regs change. The papers are also held back from the lessons, so your score is about an unseen paper rather than about what you can remember answering last week. You will never see a recycled past paper here.
Questions are kept to BS 7671:2018+A4:2026, including the Amendment 4 additions your older revision guide has never heard of.
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.
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.
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.
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.
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 18th Edition Mock Exam 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 first full practice paper is free to try as a guest; other papers require Plus.
- Where does 18th Edition Mock Exam sit in the City & Guilds scheme?
- 18th Edition Mock Exam 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 18th Edition Mock Exam 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.
- How many questions is the 18th Edition exam?
- The C&G 2382-26 assessment is 60 multiple-choice questions in 120 minutes, taken on screen with BS 7671 available to consult. That's two minutes a question — mock-exam pacing practice is the difference between finishing and guessing the last ten.
- Is the 18th Edition exam open book?
- Yes — you may use BS 7671 itself during the exam. That makes it a navigation test as much as a knowledge test: candidates who have drilled finding regulation numbers under time pressure hold a real advantage.
Explore key terms
Open a term to read its meaning here, then close it or explore another. Free to use without an account.
ZsEarth Fault Loop Impedance
The total opposition to current around the loop a fault current would travel. That loop runs from the supply, along the line conductor to the fault, and back through the protective conductor and the earthing. It is the supply's own part (Ze) plus the circuit's R1 + R2, the resistance of its line and protective conductors. A low Zs lets a big fault current flow, which trips the protective device quickly, so electricians measure it and compare it with the maximum allowed for that device.
Read the full Zs glossary entryADSAutomatic Disconnection of Supply
The standard protective measure in UK installations: earthing, protective bonding and a protective device working together so that a fault to earth causes disconnection within a prescribed time. If any leg fails — poor earth path, missing bond, wrong device — the fault can sit live on touchable metalwork instead of clearing.
Read the full ADS 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