BS 7671: Amendment 2 Overview
Voltimum

BS 7671: Amendment 2 Overview

There are many organisations providing excellent information for interested parties as to what many of the new changes mean from Amendment 2 of BS 7671: 2018. This webinar will cover three of the major changes to the standard in detail, and will seek to provide an independent voice detailing what the likely implications are for the industry as they seek to implement the changes over the next few months. Particular areas to be covered include the following: •Regulation 421.1.7 AFDDs, •Regulation Group 443.4 SPDs and •Section 422 Precautions where a particular risk of fire exists. A subse quent webinar will look in detail at the new recommendation in Regulation 411.4.2 for an earth electrode to be installed for all TN systems.

Voltimum

BS 7671: Amendment 2 Overview

Published: 7 June 2022 · Category: Training related PDFs

There are many organisations providing excellent information for interested parties as to what many of the new changes mean from Amendment 2 of BS 7671: 2018. This webinar will cover three of the major changes to the standard in detail, and will seek to provide an independent voice detailing what the likely implications are for the industry as they seek to implement the changes over the next few months. Particular areas to be covered include the following: •Regulation 421.1.7 AFDDs, •Regulation Group 443.4 SPDs and •Section 422 Precautions where a particular risk of fire exists. A subse quent webinar will look in detail at the new recommendation in Regulation 411.4.2 for an earth electrode to be installed for all TN systems.

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BS 7671: 2018 + A2: 2022 Tim Benstead CEng; MSC; MIET; MCIBSE; BEd(Hons) Language matters Verbal forms used in BS 7671 Implication Requirement Recommendation Permission Possibility and capability Possibility Description Verbal form Shall Should May Can Might Is Typical context Normative Informative Terms used within a standard mean what the standard says they mean. Definitions matter – Part 2 Examples: • Accessory • Earthing • Escape route • Protected escape route • Wiring system Protection for safety – Chapter 41 Protection for safety – Part 4 • 411.3.3 – Additional requirements for socketoutlets and for the supply of mobile equipment for use outdoors. Protection against thermal effects – Chapter 42 • 421.1.7 – AFDDs • 422 – Precautions where a particular risks of fire exist Protection against overvoltage – Chapter 44 • 443.4 – Overvoltage control Selection and erection of equipment – Part 5 Common rules – Chapter 51 • 512.1.5 – Compatibility • 514 – Warning notices – differences between domestic premises and others Selection and erection of wiring systems – Chapter 52 • Table 52.3 – Minimum cross-sectional area of conductors Selection and erection of equipment – Part 5 Protection, Isolation, Switching, Control and Monitoring – Chapter 53 • 531.3.2 – Unwanted tripping • 531.3.3 – Types of RCD Selection and erection of equipment – Part 5 Earthing arrangements and protective conductors – Chapter 54 • 543.7 – Equipment having high protective conductor currents • 544.1.1 –...

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