Guidance Note 7: Special Locations provides a comprehensive guide to the various special locations and installations for which additional measurers are required to comply with BS 7671. This updated book not only contains information on the important changes in Amendment 3 but also now incorporates some guidance that was previously in Guidance Note 1. Make sure you have all the relevant, up-to-date information expected on the following topics: Cables in bathrooms Outdoor lighting ELV lighting Mobile and transportable units Amendment 3 published on 5 January 2015 and comes into effect on 1 July 2015. All new installations from this point must comply with Amendment 3 to BS 7671:2008.