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.

• 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