Safe Isolation & GS38 Guidance (Open Book)
HSE Guidance Note GS38 and safe working procedures during electrical inspection and testing.
Key Learning & Examination Objectives
- ✓ 10-step safe isolation procedure
- ✓ GS38 approved voltage indicator & proving unit specifications
- ✓ Lock-out tag-out (LOTO) protocols and safety warning notices
- ✓ Working dead vs. working live restrictions under EAWR Reg 14
- ✓ Personal Protective Equipment (PPE) for electrical testing
Overview of Safe Isolation (Open)
The Safe Isolation & GS38 Guidance (Open 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 22 practice questions for this topic alone. You can test your knowledge right now using our web quiz player.