Guidance Note 1: Selection & Erection contains clear guidance on how to apply the relevant sections of BS 7671. A fundamental guide for specifiers, installers and those testing installations, the expected updates in Amendment 3 greatly impact on day-to-day tasks.
The main changes to BS 7671 that impact Guidance Note 1 include information on:
- consumer units (to come into effect January 2016);
- wiring in escape routes;
- changes to earth fault loop impedances for all protective devices;
- changes to definitions throughout the Regulations.
Please note, sections previously in Guidance Note 1 on Outdoor Lighting and ELV Lighting can now be found in Guidance Note 7 (5th Edition).
Amendment 3 published on 5 January 2015 and comes into effect on 1 July 2015. All new installations from this point must comply with Amendment 3 to BS 7671:2008.
About the Author
The Institution of Engineering and Technology
Table of Contents
- Chapter 1: General requirements
- Chapter 2: Selection and erection of equipment
- Chapter 3: Protection against overcurrent, electric shock and overvoltage
- Chapter 4: External influences
- Chapter 5: Installation of cables
- Chapter 6: Sizing of cables
- Chapter 7: Other influences
- Chapter 8: Installation of equipment
- Appendix A: Cable capacities of conduit and trunking
- Appendix B: Degrees of protection provided by enclosures
- Appendix C: Standard circuit arrangements and the provision of socket-outlets
- Appendix D: Limitation of earth fault loop impedance for compliance with Regulation 543.1.1
- Appendix E: Resistance and impedance of copper and aluminium conductors under fault conditions
- Appendix F: Selection and erection of wiring systems
- Appendix G: Notes on methods of support for cables, conductors and wiring systems
- Appendix H: Maximum demand and diversity
- Appendix I: Permitted protective conductor currents
- Appendix J: Standard symbols, units and graphical symbols for general electrical purposes
- Appendix K: Addresses of associated bodies and industry contacts