BS 7671 Amendment 2

BS7671 Amendment 2 is incorporated into the 18th Edition of the IET Wiring Regulations which was updated in 2022 and is known as BS 7671:2018+A2:2022 Requirements for Electrical Installations.

The current version (at time of writing) of BS 7671 2018 includes:

Corrigendum 2018
Amendment 1 2020
Corrigendum 2020
Amendment 2 2022

And is coloured brown, some refer to it as the BBB (Big Brown Book).

UPDATE May 2023:

BS 7671 Corrigendum 2023

In May 2023 the IET released another Corrigendum to BS 7671 18th Edition. A statement from the IET says;

BS 7671:2018+A1:2020 has been withdrawn for over six months now and it could be said that the effects of BS 7671:2018+A2:2022 are now bedding in and we have started to receive feedback about some of the changes.

All British Standards are subject to review at least every five years. The outcome of the review will result in the standard either being confirmed for continued use, withdrawn or updated.

Information is received daily and sometimes it is necessary to make changes before the next planned Amendment to BS 7671.
– Source: IET

You can view the May Corrigendum here BS 7671 Corrigendum 2023

BS 7671 Parts

BS7671 incorporating Amendment 2 is set out in 8 parts as shown below.

Part 1 – Object, Scope and Fundamental Principles
Part 2 – Definitions
Part 3 – Assessment of General Characteristics
Part 4 – Protection for Safety
Part 5 – Selection and Erection of Equipment
Part 6 – Inspection and Testing
Part 7 – Special Installations and or Locations
Part 8 – Functional Requirements

Parts 1 – 6 and 8 is further broken down in to Chapters, Part 7 is divided by Sections such as Section 722 Electric Vehicle Charging Installations.

BS 7671 Chapters

BS 7671 incorporating Amendment 2 2022 Parts 1 to 6 and 8 are sub-divided in to Chapters relevant to the Part.

BS 7671 Sections

Part 7 of Amendment 2, Special Installations or Locations is sub-divided in to Sections relevant to Special Locations and Installations.

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 707 – N/A
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 713 – N/A
Section 714 – Outdoor Lighting Installations
Section 715 – Extra-low Voltage Lighting Systems
Section 716 – N/A
Section 717 – Mobile or Transportable Units
Section 718 > 720 – N/A
Section 721 – Electrical Installations in Caravans and Motor Caravans
Section 722 – Electric Vehicle Charging Installations
Section 723 > 728 – N/A
Section 729 – Operating and Maintenance Gangways
Section 730 – Onshore Units of Electrical Shore Connections for Inland Navigation Vessels
Section 731 > 739 – N/A
Section 740 – Temporary Electrical Installations for Structures, Amusement Devices and Booths at Fairgrounds, Amusement Parks and Circuses
Section 741 > 752 – N/A
Section 753 – Heating Cables and Embedded Heating Systems