Free mock exam
C&G 2391-51 Mock Exam — Periodic Inspection & Testing
Free City & Guilds 2391-51 Periodic Inspection & Testing mock exam. 30 questions drawn from a 380-question bank covering periodic inspection and condition reporting to BS 7671: EICR observations and classification codes (C1/C2/C3/FI), extent and limitations, sampling, the GN3 test sequence, continuity, insulation resistance, polarity, earth fault loop impedance and RCD testing. Sitting the combined 2391-52 instead? Use our 2391 Inspection & Testing mock exam, which also covers initial verification.
- Questions
- 30
- Time limit
- 90 min
- Pass mark
- 70% · 21/30
- Question bank
- 380
Free, no sign-up. Retake as many times as you like — different questions each time.
Sample questions
01What is the primary purpose of periodic inspection and testing?
- ATo extend the manufacturer warranty on the consumer unit
- BTo verify the installation remains safe for continued use
- CTo prove the installation complies with the latest edition of BS 7671
- DTo increase the value of the property before sale
Why: Periodic inspection and testing verifies that an electrical installation remains safe for continued use and identifies any deterioration or defects.
02What does EICR stand for?
- AElectrical Inspection Certificate Report
- BElectrical Installation Condition Report
- CElectrical Industry Certification Requirements
- DEnergy Installation Compliance Report
Why: EICR stands for Electrical Installation Condition Report, which documents the condition of an existing electrical installation.
03What does a C2 classification indicate?
- AFurther investigation required without delay
- BImprovement recommended but not essential for safety
- CPotentially dangerous - urgent remedial action required
- DDanger present - immediate remedial action required
Why: C2 indicates 'Potentially dangerous' - requiring urgent remedial action.
Common questions
Is the C&G 2391-51 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.
