Free 2391-51 Exam Prep
City & Guilds 2391-51 Level 3 Award in Periodic Inspection, Testing & Certification
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2391-51 City & Guilds UK Trade Qualifications License: Complete Roadmap
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Purpose, Requirements & DocumentationYou are here
Understand why periodic inspection is carried out, the legal context (EWR 1989, BS 7671 Reg 651), the EICR and its schedules, and recommended inspection intervals (~18%).
Classification Codes & Engineering Judgement
Master C1/C2/C3/FI coding with worked scenarios so you can justify the correct code based on actual risk (~20%).
Sequence of Tests & Interpreting Results
Drill the dead-before-live sequence, continuity, IR, polarity, Ze/Zs, PFC and RCD testing, and compare results against BS 7671 limits (~21%).
Sampling, Limitations & Safe Testing
Cover sampling, agreed extent and limitations, and safe isolation on existing installations, then complete the 100-question practice bank and review every miss with the AI tutor (~25%).
Can You Take the 2391-51 Exam?
Check if you meet the basic eligibility requirements
- •Sound working knowledge of BS 7671:2018+A2:2022 (18th Edition)
- •Practical experience of inspection and testing of electrical installations
- •The 2382 18th Edition Award is commonly completed beforehand
- •Access to BS 7671 and IET Guidance Note 3 for open-book assessment
2391-51 Quick Facts
Time to Get Licensed
4-8 weeks typical (a short intensive course plus self-study)
From start to license in hand
Exam Provider
City & Guilds (online e-volve theory plus centre-based practical assessment)
Retake Policy
Candidates who do not pass a component may resit it per the approved centre's policy, usually for an additional fee.
Total Cost Breakdown
Free 2391-51 Prep Tools
100+ Practice Questions
Practice by topic with detailed answer explanations
AI Tutor Explains Mistakes
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Updated for 2026
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What You'll Study
9 chapters covering the exam topics in this guide
Chapter 1: Purpose & Statutory Framework of Periodic Inspection
3 sections
Chapter 2: Visual Inspection & Sampling Procedures
3 sections
Chapter 3: Electrical Installation Condition Report (EICR) Structure
3 sections
Chapter 4: EICR Classification Coding Principles (C1, C2, C3, FI)
3 sections
Chapter 5: Classification Code Application & Practical Scenarios
3 sections
Chapter 6: Dead Testing Sequence on Existing Installations
3 sections
Chapter 7: Live Testing Sequence & RCD Verification
3 sections
Chapter 8: Scope, Limitations & Safe Testing Procedures
3 sections
Chapter 9: Test Result Interpretation, Temperature Correction & Certification
3 sections
2391-51 Exam Details
City & Guilds 2391-51 Level 3 Award in Periodic Inspection, Testing & Certification
Administered by City & Guilds
Exam Content Breakdown
Based on the official City & Guilds content outline
Purpose of periodic inspection under BS 7671 and the Electricity at Work Regulations, assessing existing installations for continued service, deterioration, damage and alterations, visual inspection, and recommended inspection intervals
GN3 recommended 100% sample, justifying and recording reduced samples on large installations, selecting a representative sample, and extending the extent when defects are found
Completing the Electrical Installation Condition Report, schedule of inspections, schedule of test results, declarations, recommended next inspection date, and the Satisfactory/Unsatisfactory outcome
Applying C1 (danger present), C2 (potentially dangerous), C3 (improvement recommended) and FI (further investigation) using engineering judgement, with GN3 guidance
Dead and live test sequence: continuity of protective conductors and ring finals, insulation resistance, polarity, Ze, Zs, prospective fault current and RCD testing
Agreeing and recording the extent of the installation covered, standard limitations (concealed cables), operational limitations, and the absence of records
Safe isolation (prove-test-prove), risk assessment on deteriorated installations, protecting equipment and people, and returning the installation to service
Comparing measured values against BS 7671 maximum Zs and minimum IR, applying temperature correction, trend analysis against previous reports, and instrument calibration
What's Included
9 Chapters
Complete exam coverage
Practice Quizzes
With detailed explanations
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Quality Exam Prep Shouldn't Cost Hundreds
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What's Next After the 2391-51?
After passing the 2391-51, you can pursue these career paths
2391-51 Exam FAQ
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