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Full Description
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 for apprentices and trainees carrying out the calculations necessary for a basic installation and has been fully updated to BS 7671:2018+A2:2022.
BS 7671:2018+A2:2022 incorporates changes from the first amendment, published in 2020, regarding Electric Vehicle Charging Installations to provide greater guidance on embracing changing technology within this sector. Additional changes within the second amendment include protection against thermal effects and fire caused by electrical equipment, protection against voltage disturbances and electromagnetic disturbances, and a new section on prosumer's low-voltage electrical installations covering energy efficiency measures, the interface with the smart grid, the management of electricity consumption, the management of renewable sources of electricity, and energy storage.
Contents
Section 1: Design sequence
Section 2: Simple installations and final circuits
Section 3: Maximum demand and diversity
Section 4: Selection of cables for current-carrying capacity
Section 5: Voltage drop
Section 6: Calculation of fault current
Section 7: Shock protection
Section 8: Protection against fault current
Section 9: Calculations associated with testing
Section 10: Impedance of copper and aluminium conductors
Section 11: Harmonics
Section 12: Protection against voltage disturbances
Section 13: Busbar trunking
Section 14: Prosumer's electrical installations (PEIs)
Appendix A: Symbols
Appendix B: Standard final circuits
Appendix C: Avoidance of unintentional operation of circuit-breakers
Appendix D: Further cable calculations
Appendix E: Symbols from PD CLC/TR 50480:2011
Appendix F: Equipment data
Index
