Free mock exam
18th Edition Mock Exam (BS 7671:2018+A4:2026)
Free 18th Edition mock exam covering BS 7671:2018 Amendment 4 (2026). 30 questions pulled from a 300-question bank: Chapter 41 protection against electric shock, RCD selection (Type AC restriction post-A4), AFDDs for HMOs, Section 722 EV charging, supplementary bonding, Section 701 special locations, inspection and testing.
- Questions
- 30 questions
- Time limit
- 60 min
- Pass mark
- 70% to pass (21/30)
- Bank size
- 300 question bank
Free · no sign-up · timer can be ignored · retake as many times as you want
Sample questions
01Which regulation in BS 7671 covers initial verification?
- A.Regulation 314.1
- B.Regulation 643.1
- C.Regulation 521.8
- D.Regulation 411.3.3
Why: Regulation 643.1 specifically covers the requirements for initial verification of electrical installations.
02Which regulation requires that circuits supplying portable outdoor equipment be RCD protected?
- A.Regulation 643.1
- B.Regulation 521.8
- C.Regulation 314.1
- D.Regulation 411.3.3
Why: Regulation 411.3.3 mandates RCD protection for circuits supplying portable outdoor equipment.
03What is the minimum acceptable insulation resistance value for a 230V circuit?
- A.5 MΩ
- B.1 MΩ
- C.0.5 MΩ
- D.2 MΩ
Why: BS 7671 requires a minimum insulation resistance of 1 MΩ for circuits up to 500V.
FAQ
Is the 18th Edition mock exam free?
Yes — 100% free, no sign-up needed. Questions are pulled at random from a substantial bank, with a worked explanation on every question after you submit.
Can I retake the mock exam?
Yes. Every attempt picks a different random selection and reshuffles the options, so each retake gives you genuinely new questions. No limit on retakes.
Does this count towards the real qualification?
No — this is independent practice material. To gain the actual qualification you need to sit the official assessment through an approved provider.
