Requirements for Electrical Installations, IET Wiring Regulations, Eighteenth Edition, BS 7671:2018

Introduction to BS 7671:2018

Part 1: Scope, object and fundamental principles


Chapter 11: Scope
Chapter 12: Object and effects
Chapter 13: Fundamental principles




Part 2: Definitions


Part 3: Assessment of general characteristics


Chapter 31: Purposes, supplies and structure
Chapter 32: Classification of external influences
Chapter 33: Compatibility
Chapter 34: Maintainability
Chapter 35: Safety services
Chapter 36: Continuity of service




Part 4: Protection for safety


Chapter 41: Protection against electric shock
Chapter 42: Protection against thermal effects
Chapter 43: Protection against overcurrent
Chapter 44: Protection against voltage disturbances and electromagnetic disturbances
Chapter 46: Isolation and switching




Part 5: Selection and erection of equipment


Chapter 51: Common rules
Chapter 52: Selection and erection of wiring systems
Chapter 53: Protection, isolation, switching, control and monitoring
Chapter 54: Earthing arrangements and protective conductors
Chapter 55: Other equipment
Chapter 56: Safety services




Part 6: Inspection and testing


Chapter 64: Initial verification
Chapter 65: Periodic inspection and testing




Part 7: Special installations or locations


Section 700 General
Section 701: Locations containing a bath or shower
Section 702: Swimming pools and other basins
Section 703: Rooms and cabins containing sauna heaters
Section 704: Construction and demolition site installations
Section 705: Agricultural and horticultural premises
Section 706: Conducting locations with restricted movement
Section 708: Electrical installations in caravan / camping parks and similar locations
Section 709: Marinas and similar locations
Section 710: Medical locations
Section 711: Exhibitions, shows and stands
Section 712: Solar photovoltaic (pv) power supply systems
Section 714: Outdoor lighting installations
Section 715: Extra-low voltage lighting installations
Section 717: Mobile or transportable units
Section 721: Electrical installations in caravans and motor caravans
Section 722: Electric vehicle charging installations
Section 729: Operating and maintenance gangways
Section 730: Onshore units of electrical shore connections for inland navigation vessels
Section 740: Temporary electrical installations for structures, amusement devices and booths at fairgrounds, amusement parks and circuses
Section 753: Heating cables and embedded heating systems




Appendices


1: British standards to which reference is made in this standard
2: Statutory regulations and associated memoranda
3: Time/current characteristics of overcurrent protective devices and RCDs
4: Current-carrying capacity and voltage drop for cables
5: Classification of external influences
6: Model forms for certification and reporting
7: Harmonized cable core colours
8: Current-carrying capacity and voltage drop for busbar trunking and powertrack systems
9: Definitions - multiple source, DC and other systems
10: Protection of conductors in parallel against overcurrent
11: Not used

12: Not used

13: Methods for measuring the insulation resistance/impedance of floors and walls to earth or to the protective conductor system
14: Determination of prospective fault current
15: Ring and radial final circuit arrangements, Regulation 433.1
16: Devices for protection against overvoltage
17: Energy efficiency



Table of figures
Table of tables
Index