17th Edition IET Wiring Regulations: Explained and Illustrated

Description

This popular guide focuses on common misconceptions in the application of the IET Wiring Regulations. It explains in clear language those parts of the regulations that most need simplifying, outlining the correct procedures to follow and those to avoid. Emphasis has been placed on areas where confusion and misinterpretation are common, such as earthing and bonding, circuit design and protection, and in particular the increased use of RCDs. With the coverage carefully matched to the syllabus of the City & Guilds Certificate in the Requirements for Electrical Installations (2382-12 and 2382-15) and containing sample exam questions and answers, this book is also an ideal revision guide. CHAPTER 1 Fundamental Requirements for Safety IET Wiring Regulations (IET Regulations Part 1 and Chapter 13) The Health and Safety at Work Act 1974 The Electricity at Work Regulations 1989 The Building Regulations 2010 Part 'P' CHAPTER 2 Earthing Earth: What Is It, and Why and How Do We Connect to It? Earth Electrode Resistance Earthing in the IET Regulations (IET Regulations Chapter 4, Section 411) Earthing Systems (IET Regulations Definitions (Systems)) Earth Fault Loop Impedance Determining the Value of Total Loop Impedance CHAPTER 3 Protection What is Protection? Protection Against Electric Shock (IET Regulations Chapter 41) SELV or PELV Protection Against Overcurrent (IET Regulations Chapter 43 and Definitions) Protection Against Overvoltage (IET Regulations Section 443) Protection Against Undervoltage (IET Regulations Section 445) CHAPTER 4 Isolation Switching and Control Isolation and Switching (IET Regulations Section 537) CHAPTER 5 Circuit Design Design Procedure Design Current Nominal Setting of Protection Voltage Drop (IET Regulations 525 and Appendix 12) Shock Risk (IET Regulations Section 411) Thermal Constraints (IET Regulations Section 543) Example of Use of the Adiabatic Equation An Example of Circuit Design Assessment of General Characteristics Sizing the Main Tails Sizing the Kiln Circuit Cable CHAPTER 6 Inspection and Testing Testing Sequence (Part 7) CHAPTER 7 Special Locations IET Regulations Part 7 Introduction BS 7671 Section 701: Bathrooms, etc. BS 7671 Section 702: Swimming Pools BS 7671 Section 703: Hot Air Saunas BS 7671 Section 704: Construction Sites BS 7671 Section 705: Agricultural and Horticultural Locations BS 7671 Section 706: Conductive Locations with Restrictive Movement BS 7671 Section 708: Caravan and Camping Parks BS 7671 Section 709: Marinas BS 7671 Section 710: Medical Locations BS 7671 Section 711: Exhibitions, Shows and Stands BS 7671 Section 712: Solar Photovoltaic (PV) Supply Systems BS 7671 Section 714: Outdoor Lighting Installations BS 7671 Section 715: Extra Low Voltage Lighting Installations BS 7671 Section 717: Mobile or Transportable Units BS 7671 Section 721: Caravans and Motor Caravans BS 7671 Section 722: Electric Vehicle Charging Installations BS 7671 Section 729: Operating and Maintenance Gangways BS 7671 Section 740: Amusement Devices, Fairgrounds, Circuses, etc. BS 7671 Section 753: Floor and Ceiling Heating Systems APPENDIX A 17th Edition: Examination Question Allocation and Sample Paper Typical City & Guilds Style Multiple Choice Question Paper Sample Paper APPENDIX B Answers to Multiple Choice Test