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Full Description
Guidance Note 3: Inspection & Testing is a fundamental guidance book for all those involved with the testing and inspection of electrical installations. It also contains essential guidance for those studying for inspection and testing qualifications and has been fully updated to BS 7671:2018:2022.
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 chapter 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
Cooperating organizations
Acknowledgements
Preface
Introduction
Chapter 1: General requirements
Chapter 2: Initial verification
Chapter 3: Periodic inspection and testing
Chapter 4: Test instruments and equipment
Chapter 5: Forms
Appendix A: Maximum permissible measured earth fault loop impedance (EFLI)
Appendix B: Resistance of copper and aluminium conductors
Appendix C: Use of an earth leakage current clamp meter to provide an indication of the state of insulation
Appendix D: Safety check for diverted neutral currents
Index
