IET Wiring Regulations Requirements for Electrical Installations BS 7671:2018+A2:2022 + Corrigendum of 09 May 2023 (PDF)

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About the book:

Publisher: IET;
Place of Publication: United Kingdom;
Pages: 610 pages;
Size: 155 MB;
Release Date: 03/2022 + Corrigendum of 09 May 2023;
Language: English.

Amendment 2 to BS 7671:2018 (18th Edition of the IET Wiring Regulations) introduces a new requirement for Arc Fault Detection Devices (AFDDs), updated requirements for the fire safety design for buildings and a new chapter on Prosumer’s Low Voltage Electrical Installations.

Amendment 2 comes into effect immediately when published on 28th March 2022 and the previous version, BS 7671:2018+A1:2020, will be withdrawn six months later.

Significant changes include:

- a new requirement for Arc Fault Detection Devices (AFDDs) in some AC final circuits for installations in some types of higher risk residential buildings;

- the requirement for the fire safety design of buildings to be documented where specific conditions of external influence exist, such as protected escape routes and locations with risk of fire;

- method for determining the requirement to provide overvoltage protection;

- changes to identification, labels and notices, such as for consumer units, affecting how safety information is provided to the user of the electrical installation;

- a chapter on Prosumer’s Low Voltage Electrical Installations, in a new part, Part 8.

Corrigendum to BS 7671:2018+A2:2022:

Also, The Institution of Engineering and Technology (IET) and BSI, have released a Corrigendum to BS 7671:2018+A2:2022. The Corrigendum makes changes to five areas of BS 7671 and came into effect immediately when published on Monday 15 May 2023.

Areas of change include:
•Regulation 422.2 has been amended to clarify the scope of the provision.
•Indent (ii) of Regulation 443.4.1 has been removed. The term safety service, formerly included in Regulation 443.4.1 (ii), encompassed a wide range of systems. The provision, therefore, had unintended consequences for improvements to fire safety systems within installations.
•Table 443.2 and the Note to Regulation 534.4.1.1 have been amended to remove examples of equipment.
•Regulation 701.1 has been amended to remove the reference to birthing pools.
•A new Regulation, 710.422.2.201, has been included in order to modify requirements in Regulation group 422.2 for protected escape routes in healthcare facilities.

Content:

Introduction to BS 7671:2018
Introduction to Amendment 1:2020
Introduction to Amendment 2:2022
PART 1 SCOPE, OBJECT AND FUNDAMENTAL PRINCIPLES
CHAPTER 11 SCOPE
CHAPTER 12 OBJECT AND EFFECTS
CHAPTER 13 FUNDAMENTAL PRINCIPLES
PART2 DEFINITIONS
PART3 ASSESSMENT OF GENERAL CHARACTERISTICS
CHAPTER 30 ASSESSMENT OF GENERAL CHARACTERISTICS
CHAPTER 31 PURPOSES, SUPPLIES AND STRUCTURE
CHAPTER 32 CLASSIFICATION OF EXTERNAL INFLUENCES
CHAPTER 33 COMPATIBILITY
CHAPTER 34 MAINTAINABILITY
CHAPTER 35 SAFETY SERVICES
CHAPTER 36 CONTINUITY OF SERVICE
PART4 PROTECTION FOR SAFETY
CHAPTER 41 PROTECTION AGAINST ELECTRIC SHOCK
CHAPTER 42 PROTECTION AGAINST THERMAL EFFECTS
CHAPTER 43 PROTECTION AGAINST OVERCURRENT
CHAPTER 44 PROTECTION AGAINST VOLTAGE DISTURBANCES
CHAPTER 45 NOT USED
CHAPTER 46 ISOLATION AND SWITCHING
PART5 SELECTION AND ERECTION OF EQUIPMENT
CHAPTER 51 COMMON RULES
CHAPTER 52 SELECTION AND ERECTION OF WIRING SYSTEMS
CHAPTER 53 PROTECTION, ISOLATION, SWITCHING, CONTROL AND MONITORING
CHAPTER 54 EARTHING ARRANGEMENTS AND PROTECTIVE CONDUCTORS
CHAPTER 55 OTHER EQUIPMENT
CHAPTER 56 SAFETY SERVICES
PART6 INSPECTION AND TESTING
CHAPTER 61 NOT USED
CHAPTER 62 NOT USED
CHAPTER 63 NOT USED
CHAPTER 64 INITIAL VERIFICATION
CHAPTER 65 PERIODIC INSPECTION AND TESTING
PART7 SPECIAL INSTALLATIONS OR LOCATIONS
SECTION 700 GENERAL
SECTION 701 LOCATIONS CONTAINING A BATH OR SHOWER
SECTION 702 SWIMMING POOLS AND OTHER BASINS
SECTION 703 ROOMS AND CABINS CONTAINING SAUNA HEATERS
SECTION 704 CONSTRUCTION AND DEMOLITION SITE INSTALLATIONS
SECTION 705 AGRICULTURAL AND HORTICULTURAL PREMISES
SECTION 706 CONDUCTING LOCATIONS WITH RESTRICTED MOVEMENT
SECTION 708 ELECTRICAL INSTALLATIONS IN CARAVAN/ CAMPING PARKS AND SIMILAR LOCATIONS
SECTION 709 MARINAS AND SIMILAR LOCATIONS
SECTION 710 MEDICAL LOCATIONS
SECTION 711 EXHIBITIONS, SHOWS AND STANDS
SECTION 712 SOLAR PHOTOVOLTAIC(PV) POWER SUPPLY SYSTEMS
SECTION 714 OUTDOOR LIGHTING INSTALLATIONS
SECTION 715 EXTRA-LOW VOLTAGE LIGHTING INSTALLATIONS
SECTION 717 MOBILE OR TRANSPORTABLE UNITS
SECTION 721 ELECTRICAL INSTALLATIONS IN CARAVANS AND MOTOR CARAVANS
SECTION 722 ELECTRIC VEHICLE CHARGING INSTALLATIONS
SECTION 729 OPERATING AND MAINTENANCE GANGWAYS
SECTION 730 ONSHORE UNITS OF ELECTRICAL SHORE CONNECTIONS FOR INLAND NAVIGATION VESSELS
SECTION 740 TEMPORARY ELECTRICAL INSTALLATIONS FOR STRUCTURES, AMUSEMENT DEVICES
AND BOOTHS AT FAIRGROUNDS, AMUSEMENT PARKS AND CIRCUSES
SECTION 753 HEATING CABLES AND EMBEDDED HEATING SYSTEMS
PART8 FUNCTIONAL REQUIREMENTS
CHAPTER 82 PROSUMER’S LOW VOLTAGE ELECTRICAL INSTALLATIONS
APPENDICES
1 (Normative) BRITISH STANDARDS TO WHICH REFERENCE IS MADE IN BS7671
2 (Informative) STATUTORY REGULATIONS AND ASSOCIATED MEMORANDA
3 (Informative) TIME/CURRENT CHARACTERISTICS OF OVER-CURRENT PROTECTIVE DEVICES
4 (Informative) CURRENT-CARRYING CAPACITY AND VOLTAGE DROP FOR CABLES
5 (Informative) CLASSIFICATION OF EXTERNAL INFLUENCES
6 (Informative) MODEL FORMS FOR CERTIFICATION AND REPORTING
7 Deleted by BS 7671:2018+A2.2022
8 (Informative) CURRENT-CARRYING CAPACITY AND VOLTAGE DROP FOR BUSBAR TRUNKING AND
POWER TRACK SYSTEMS
9 (Informative) DEFINITIONS - MULTIPLE SOURCE, DC AND OTHER SYSTEMS
10 (Informative) PROTECTION OF CONDUCTORS IN PARALLEL AGAINST OVER-CURRENT
11 (Informative) WARNING AND USER INSTRUCTION LABELS
12 NOT USED
13 (Informative) ESCAPE ROUTES AND FIRE PROTECTION
14 (Informative) DETERMINATION OF PROSPECTIVE FAULT CURRENT
15 (Informative) RING AND RADIAL FINAL CIRCUIT ARRANGEMENTS, REGULATION 433.1
16 (Informative) DEVICES FOR PROTECTION AGAINST OVERVOLTAGE
17 (Informative) ENERGY EFFICIENCY
TABLE OF FIGURES
TABLE OF TABLES
INDEX

Tags: 18th Edition 2022 pdf, iet Wiring Regulation 2022 pdf, Amendment 2 to BS 7671:2018, Corrigendum to BS 7671 pdf, BS 7671:2018+A2:2022