On-Site Guide (BS 7671:2018+A2:2022) (Electrical Regulations)

Product Information

The requirements for RCD testing have been changed and Table 3A (Time/current performance criteria for RCDs) in Appendix 3 has been deleted. Regardless of RCD Type, an alternating current test at rated residual operating current (IMn) is used to verify the effectiveness. Section 702 - Swimming pools and other basins

Regulation 514.9.2 has been introduced to advise that all diagrams, charts, and information or instruction notices comply with the applicable standards specified. Domestic and similar installations, including off-peak supplies, supplies to associated garages, outbuildings and the like; and NOTE 1: Completion of an electrical installation designed to the withdrawn standard can be subject to the contractual agreement between all parties involved. This book only includes immediately relevant information, such as updates for work on single- and three-phase systems up to 100AFor all other cases, protection against transient overvoltages shall be provided unless the owner of the installation declares it is not required due to any loss or damage being tolerable and they accept the risk of damage to equipment and any consequential loss. Regulation 16 Regulations, BS 7671, must comply with all relevant statutory regulations, such as the Information on Special Installations & Locations (Part 7 in the 18th edition bs7671) is only mentioned sparingly in this guide. However, some notes are included on the specific sections relating to Bathroom & Shower fittings, as well as advice on underfloor heating installations. Option 3 – Fitting an EV charger without PEN Fault built in but installing an earth rod as means of earth for the charge point only. Regulation 443.4.2 requires protection against overvoltages to be considered in the case of equipment likely to produce switching overvoltages or disturbances and gives conditions.

Regulation 717.411.4 has been expanded to take account of PME. Section 722 - Electric vehicle charging installations Regulation 422.2 now introduces separate requirements for escape routes and a new concept of 'protected escape routes'. Reference to conditions BD2, BD3 and BD4 has been deleted. Chapter 44 - Protection against voltage disturbances and electromagnetic disturbances A note has been added clarifying that where non-metallic pipes, e.g. plastic, enter the building and are then connected to metallic pipes within the building, the metallic pipes within the building do not normally require protective bonding as they are unlikely to be extraneous-conductive-parts. Reference to insulating sections has been removed.Regulation, 702.414.3, concerning SELV and PELV, has been introduced. Section 703 - Rooms and cabins containing sauna heaters It would be impossible to cover all of the detail pertained in the book within a summary article. However, please see below a list of key sections and Appendices sub-headings, which should help you to understand what items are broadly available. Sections: Supply through a distributors cut-out having fuse(s) rated at 100A or less to one of either BS 88-2, BS 88-3, BS 88-6 or BS 1361 Type II standards

that the load current contains no DC components. Chapter 54 - Earthing arrangements and protective conductors Changes include the addition of new regulations (relocated from Chapter 53) covering the impact and the installation of heating cables. Chapter 82 - Prosumer’s low-voltage electrical installations Regulation Group 643.3 has been redrafted. The requirements for testing insulation resistance where equipment is likely to influence the verification test or be damaged has been clarified and reference is made to a 250 V DC test following the connection of equipment.Modifications have been made to Regulation Group 543.7 concerning earthing requirements for the installation of equipment having high protective conductor currents. This publication has been further updated to include two subsequent amendments to the IET Wiring Regulations as BS 7671:2018+A2:2022. This is a new appendix that provides guidance for the types of safety signs, warning signs and instructions required to be applied to electrical installations. Appendix 13 Escape routes and fire protection Table 51 has been modified slightly to take into account changes of colour identification for DC and abbreviations have been added.