Fault Coding Quick Classifier (Closed Book)
Rapid recall test for assigning C1, C2, C3, and FI codes under pressure during exam conditions.
Key Learning & Examination Objectives
- ✓ Exposed live conductors -> C1
- ✓ Absence of earthing / main bonding -> C2
- ✓ Missing warning labels -> C3
- ✓ Unidentified circuits / hidden junctions -> FI
Overview of Closed: Fault Coding
The Fault Coding Quick Classifier (Closed Book) module evaluates your practical understanding of BS 7671:2018+A4:2026 Part 6 (Inspection and Testing) and IET Guidance Note 3. Candidates preparing for the City & Guilds 2391-52 qualification must demonstrate complete accuracy in both theoretical principles and field test execution.
Important BS 7671 Standard Note
All questions in this module strictly reflect the latest UK wiring regulations BS 7671:2018+A4:2026. Pay special attention to maximum earth fault loop impedance tables, temperature correction factors (0.8 × Zs rule), and RCD trip testing thresholds.
Question Bank Details
Our full mobile app contains 35 practice questions for this topic alone. You can test your knowledge right now using our web quiz player.