Electrical Installation Design Guide: Calculations for Electricians and Designers provides step-by-step guidance on the design of electrical installations. The guide will be useful to all persons designing electrical installations, also for apprentices and trainees carrying out the calculations necessary for a basic installation and has been fully updated to BS 7671:2018+A4:2026.
Chapter 1: Design sequenceChapter 2: Simple installations and final circuitsChapter 3: Maximum demand and diversityChapter 4: Selection of cables for current-carrying capacityChapter 5: Voltage dropChapter 6: Calculation of fault currentChapter 7: Shock protectionChapter 8: Protection against fault currentChapter 9: Calculations associated with testingChapter 10: Impedance of copper and aluminium conductorsChapter 11: HarmonicsChapter 12: Protection against voltage disturbancesChapter 13: Busbar trunkingChapter 14: Prosumer's electrical installations (PEIs)Appendix A: SymbolsAppendix B: Standard final circuitsAppendix C: Avoidance of unintentional operation of circuit-breakersAppendix D: Further cable calculationsAppendix E: Symbols from PD CLC/TR 50480:2011Appendix F: Equipment dataIndex