As its name suggests, it is intended for on-site consultation when working on single-phase and three-phase systems up to 100A. We are the IET and we inspire, inform and influence the global engineering community to engineer a better world.

Content on standard circuits usage, which is not referenced in the main book, is included in Section 7. It enables the competent electrician to deal with installations (up to 100 A, 3-phase) providing information in a convenient, easy-to-use format. Always look to cross-reference information provided with the 18th edition full guide when necessary. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. It contains multiple updates from the 17th Edition which are intended to make electrical installations more effective, safer and more efficient.The certificate will show your company's details, tester information, proven test results and the equipment used to carry out the test. Where calibration of an instrument is possible we will offer this as a separately purchasable item and may be selected from the drop-down box above.

It enables the competent electrician to deal with installations (up to 100 A, 3-phase) providing essential information in a convenient, easy-to-use format. The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. The IET On-Site Guide to BS 7671:2018+A2:2022 summarises the essential information from the 18th Edition in an easily digestible format. This can be one of the more confusing parts of the wiring regulations so Guidance Note 3 is intended to clarify any issues. A numbering system is in-play, and, although the level of detail is reduced, users can still find the location of information in the same way.It should be noted that as the table in this section only offers overview guidance, the numbers used may not provide optimum economical options.

The 18th Edition has been further updated to include two subsequent amendments as BS 7671:2018+A2:2022.The Guide includes material not included in BS7671, it provides background to the intentions of BS 7671 and gives other sources of information. The On-Site Guide is an essential guide to BS 7671 and the 'go to' book for a competent electrician and students to deal with installations (up to 100 A, 3-phase) refering to information in a convenient, easy-to-use format. This is the only guide to BS 7671:2018+A2:2022 written by the Wiring Regulations experts at the IET.