{"product_id":"on-site-guide-bs-7671-2018-a4-2026","title":"On-Site Guide (BS 7671:2018+A4:2026)","description":"The On-Site Guide is an essential guide to BS 7671. It incorporates the extensive changes to BS 7671, making this a vital guide for keeping up to date. It enables the competent installer to deal with installations (up to 100 A, 3-phase) providing essential information in a convenient, easy-to-use format. This publication has been further updated to include all four amendments to the 18th Edition and aligns with BS 7671:2018+A4:2026 The IET Wiring Regulations. BS 7671:2018+A4:2026 incorporates changes from all four amendments to BS 7671:2018 and the On-Site Guide includes new topics, such as bidirectional and unidirectional protective devices; Stationary Secondary Batteries; amended rational for maximum Zs values for protective devices; guidance on selection of RCDs and guidance on prospective fault current for protective devices.","brand":"Institution of Engineering and Technology","offers":[{"title":"Default Title","offer_id":57632235192655,"sku":"9781837240395","price":70.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0061\/0372\/8217\/files\/9781837240395_1-on-site-guide-bs-76712018a42026.jpg?v=1778047861","url":"https:\/\/www.suomalainen.com\/products\/on-site-guide-bs-7671-2018-a4-2026","provider":"Suomalainen.com","version":"1.0","type":"link"}