18th Edition exam guides
Plain-English guides to the 2382-26 exam and the parts of BS 7671:2018+A4:2026 people find hardest. Free to read, tabbed by the Part of the book they cover.
Start with these
-
Exam prep
The 18th Edition exam (2382‑26): format, pass mark and what to expect
Everything you need to know before booking the City & Guilds 2382‑26 18th Edition exam: 60 questions, 120 minutes, the approx. 60% pass mark, the open book rules and how the paper is split.
9 min readRead -
Part 5
BS 7671 Amendment 4 (2026): what changed & what it means for the exam
Every change in BS 7671:2018+A4:2026, the Orange Book, explained in plain English with regulation numbers, plus what it means for the 2382‑26 exam and whether you need to re-sit.
9 min readRead -
Exam prep
How to pass the 18th Edition exam first time: 15 practical tips
15 practical tips for passing the City & Guilds 2382‑26 18th Edition exam first time, from weighting your revision and using the index to the 2-minute rule, mock strategy and a 4-week plan.
7 min readRead
More guides
- How much does the 18th Edition cost in 2026?A plain-English breakdown of what the 18th Edition really costs in 2026: the A4 book, the 2382‑26 exam fee, online and classroom courses, resits and the hidden costs people forget.Exam prep8 min read
- 2382‑22 vs 2382‑26: what changed and do you need to re-sit?The 18th Edition exam has moved from 2382‑22 to 2382‑26. Here are the key dates, what Amendment 4 changed, what stayed the same, and whether existing certificate holders need to re-sit.Part 5Part 4Part 78 min read
- How the 2391‑52 inspection and testing exam works: format, pass mark and the practicalThe City & Guilds 2391‑52 explained: the 60‑question 2391‑052 online test (120 minutes, approx. 75%), the three books you can take in, the 2391‑502 practical tasks at your centre, and how Amendment 4 fits in.Exam prep8 min read
- EICR coding for the 2391‑52: C1, C2, C3 and when not to use FIHow to code observations on the Amendment 4 EICR: what makes a report unsatisfactory, the split Section K, the schedule of inspection outcomes, and the two common misuses of FI.Part 6Part 8 + App.Part 56 min read
- The 2921‑34 EV charging exam: format, pass mark and what replaced 2919‑01Everything to know before booking the City & Guilds 2921‑34 EV charging award: 30 questions in 60 minutes, the approx. 75% pass mark, the two books you can take in, who can register, and why 2919‑01 is no longer an option.Part 77 min read
- The 2922‑34 solar PV exam: format, pass mark and what happened to 2399How the City & Guilds 2922‑34 solar PV award is assessed: the 30‑question unit 301 test (60 minutes, approx. 75%), the books and calculator you can take in, the unit 302 practical at your centre, and where the old 2399 awards went.Exam prep6 min read
- Bathroom zones explained: Section 701 of BS 7671 (A4:2026)Bathroom zones 0, 1 and 2 explained for BS 7671:2018+A4:2026: dimensions, minimum IP ratings, RCD protection, supplementary bonding, the 2.5 m socket-outlet rule and shaver supply units, with exam‑style questions.Part 7Part 58 min read
- Disconnection times and Table 41.1 explained (BS 7671 A4:2026)Why disconnection times exist, which circuits Table 41.1 covers, the 5 s and 1 s rules, maximum Zs with Cmin 0.95, and TT systems with RCDs, with exam‑style examples and answers.Part 49 min read
- EICR codes explained: C1, C2, C3 and FI after Amendment 4What C1, C2, C3 and FI mean on an Electrical Installation Condition Report, with typical examples, and what Amendment 4 changed: only C1 and C2 now make a report unsatisfactory.Part 6Part 8 + App.8 min read
- PME and open-PEN protection for EV chargers: 722.411.4.1 in plain EnglishWhy a broken PEN conductor is dangerous at an EV charge point, why an RCD won't help, and the options Regulation 722.411.4.1 gives: an earth electrode, a 70 V device, a 207–253 V device or an equivalent alternative.Part 7Part 56 min read
- How to tab and highlight your BS 7671 book (within the exam rules)A complete 18th Edition tab map for BS 7671:2018+A4:2026, a simple highlighting system and the City & Guilds rules on what you can and can’t do to your book.Exam prep10 min read
- Solar PV string sizing: the 1.2 and 1.25 multipliers and when you need string fusesHow to work out a PV string's maximum voltage and current with the 1.2 and 1.25 multipliers, check it against the inverter, and decide whether string overcurrent protection is needed, with a worked example for the 2922‑34.Part 75 min read
Know you’re ready before you book.
Sit a free 20‑question mock and see your score by Part of BS 7671. No sign-up. The full course is £79 for 12 months.
20 questions · 40 minutes · no sign-up
See the full course · £79