18th Edition Mock Exam 3
Plus paper60 questions · 120 minutes · open book · C&G 2382-26 format
Paper 3 of the 18th Edition mocks: a final full-length rehearsal, 60 questions in 120 minutes, open book. Try it once you feel ready for a full run-through.
Paper 3 is the dress rehearsal. Sit it at the time of day your exam is booked, at a clear desk, with the book you will actually take in — a borrowed copy you have never tabbed is a slower book. The point is to make exam day feel like a repeat of something you have already done.
The Amendment 4 ground is in here the way it is in the other two, because it is the newest material and the part your older revision guide is silent on: electrical energy storage systems, functional earthing and bonding networks for ICT installations, and Power over Ethernet as a real distribution system with real heating effects.
Review discipline afterwards matters more than the score. For every question you missed, find the requirement in the book and note the Part and Chapter rather than the fact — on an open-book paper, knowing where to look is the transferable skill.
- Working through a full paper in time
- Protection for safety and selection and erection
- Inspection, testing, special locations and Amendment 4:2026
What is in this paper
This is our independent practice mix, not the official assessment weighting. Questions target BS 7671:2018 Amendment 4:2026 and remain community drafts pending qualified review. Format checked on 14 October 2026 against the City & Guilds 2382-26 handbook. Passing here does not award a qualification or predict an exam result.
| Area | Questions | What it covers |
|---|---|---|
| Structure, scope and definitions | 9 | Which Part, Chapter or Appendix holds the answer, and the Part 2 vocabulary the question is phrased in. |
| Protection for safety | 12 | Chapters 41 to 46: shock, thermal effects, overcurrent, overvoltage, isolation and switching. |
| Selection and erection | 15 | Part 5: wiring systems and containment, cable selection, devices, earthing and bonding, identification. |
| Inspection and testing | 12 | Part 6: the dead-before-live sequence, what each reading proves, certification and condition reporting. |
| Special installations and locations | 6 | Part 7: baths and showers, pools, construction sites, caravan pitches, marinas and EV charging. |
| Amendment 4:2026 focus | 6 | Battery and energy storage, ICT functional earthing and bonding networks, and Power over Ethernet. |
Sample questions from this paper
A few of the 60. Marking happens in the app — try the paper to see how you did and what to look at next.
Q1.Functional earthing differs from protective earthing in that it exists primarily to…
- provide a fault current path for disconnection
- support the proper operation of equipment
- replace main protective bonding
- reduce the prospective fault current
Q2.Why does a large bundle of energised Power over Ethernet cables need consideration at design stage?
- The data rate falls with bundle size
- Heat builds in the centre of the bundle
- The cables become extraneous-conductive-parts
- The supply frequency shifts
Q3.Equipment with a high protective conductor current requires which additional measure?
- A second consumer unit
- A high-integrity protective conductor arrangement and a warning label
- Isolation by a locked enclosure
- Supply through a 30 mA RCD only
Q4.Which Chapter of BS 7671 covers earthing arrangements and protective conductors?
- Chapter 41
- Chapter 52
- Chapter 54
- Chapter 55
Q5.A PME (TN-C-S) earthing facility is not permitted to be exported to which of these?
- A domestic kitchen ring final circuit
- A caravan pitch supply
- A garage lighting circuit inside the building
- A first-floor shower circuit
18th Edition Mock Exam 3 is part of Plus
Paper 1 is free to try in full. Plus adds this paper and the third one, unlimited retakes, worked reasoning on every question and review of whatever you missed.
Start with the free paperCommon questions
- How long is 18th Edition Mock Exam 3 and how many questions?
- 60 multiple-choice questions in 120 minutes, each one answer from four options, which is the C&G 2382-26 shape. That is two minutes a question, and the paper is open book — you may consult BS 7671 throughout, exactly as you can in the real assessment. None of the questions appear in our lessons.
- What is the pass mark for 18th Edition Mock Exam 3?
- 60% — 36 of 60 — is the threshold used by this practice paper. City & Guilds describes the real assessment pass mark as approximately 60%; confirm current arrangements with your centre. Your result is broken down by area so you can choose what to revisit.
- Do I need TradeTraining Premium for 18th Edition Mock Exam 3?
- Yes. Paper 1 is the free full-length mock; papers 2 and 3 are part of Premium, along with unlimited retakes, worked reasoning on every question and spaced-repetition review of what you missed.
- Is the 18th Edition exam open book?
- Yes. You may consult BS 7671 during the C&G 2382-26 assessment, which makes it a navigation test as much as a knowledge test. Candidates who have drilled finding a requirement fast hold a real advantage over candidates who have only read about it.
- What is actually in the Amendment 4 material?
- Amendment 4:2026 brings the regulations up to date with technology that is now routine on site: battery and energy storage systems in prosumer installations, functional earthing and bonding networks for ICT equipment, and Power over Ethernet. Six of the sixty questions in each paper come from that ground.