UNIT – Application of health and safety and electrical principles – Chapter Statutory regulations and safe working procedures – Chapter Safe working practices and emergency procedures – Chapter Effective working practices – Chapter Electrical systems and components – Chapter Electricity supply systems, protection and earthing – Chapter Electrical machines and motors – UNIT – Installation (buildings and structures): inspection, testing and commissioning – Chapter Safe, effective and effi cient working practices – Chapter Inspection, testing and commissioning – UNIT – Installation (buildings and structures): fault diagnosis and rectifi cation – Chapter Fault diagnosis and repair – Chapter Restoring systems to working order – Answers to Check your understanding – Appendix A: Obtaining information and electronic components – Appendix B: Abbreviations, symbols and codes – Glossary of terms .