Free mock exam
C&G 2391-50 Mock Exam — Initial Verification
Free City & Guilds 2391-50 Initial Verification mock exam. 30 questions drawn from a 301-question bank covering initial verification to BS 7671: the full GN3 test sequence, safe isolation, continuity, insulation resistance, polarity, earth fault loop impedance, RCD testing, and certification with the Electrical Installation Certificate. Sitting the periodic unit instead? Use our 2391-51 mock exam — or the combined 2391 exam for the full 2391-52 syllabus.
- Questions
- 30
- Time limit
- 90 min
- Pass mark
- 70% · 21/30
- Question bank
- 301
Free, no sign-up. Retake as many times as you like — different questions each time.
Sample questions
01Which British Standard covers requirements for initial verification and periodic inspection?
- ABS 5839
- BBS 6004
- CBS 7430
- DBS 7671
Why: BS 7671 (IET Wiring Regulations) covers requirements for initial verification and periodic inspection and testing of electrical installations.
02Who is legally qualified to carry out electrical inspection and testing?
- AAnyone holding a current ECS card regardless of qualification
- BOnly an electrician directly employed by the DNO
- CA competent person with appropriate knowledge and experience
- DAny person over 18 who owns approved test equipment
Why: Inspection and testing must be carried out by a competent person with the appropriate knowledge, skills, and experience.
03What is the recommended inspection interval for industrial installations?
- A1 year
- B5 years
- C10 years
- D3 years
Why: Industrial installations typically require inspection every 3 years due to the more demanding environment.
Common questions
Is the C&G 2391-50 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.
