A practical and highly popular guide for electrical contractors of small installations‎,‎ now fully revised in accordance with the latest wiring regulations the book is a clearly written practical guide on how to design and complete a range of electrical installation projects in a competitive manner‎,‎ while ensuring full compliance with the new wiring regulations ‎(‎updated late 2008‎)‎‎.‎ The updated regulations introduced changes in terminology‎,‎ such as basic and fault protection ‎,‎ and also changed the regulation numbers‎.‎ This new edition reflects these changes‎.‎ It discusses new sections covering domestic‎,‎ commercial‎,‎ industrial and agricultural projects‎,‎ including material on marinas‎,‎ caravan sites‎,‎ and small scale floodlighting‎.‎ This book provides guidance on certification and test methods‎,‎ with full attention given to electrical safety requirements‎.‎ Other brand new sections cover protective measures‎,‎ additional protection by means of rcds‎,‎ the new cable guidelines for thin wall partitions and part p of the building regulations‎.‎ * provides simple‎,‎ practical guidance on how to design electrical installation projects‎,‎ including worked examples and case studies * covers new cable guidelines and part p of the building regulations ‎(‎electrical installations‎)‎ in line with 17th edition of the wiring regulations bs 7671‎:‎2008 * new chapters on protective measures and additional protection by means of rcds ‎(‎residual current devices‎)‎ * features new wiring projects such as marinas‎,‎ caravan sites and small scale floodlighting and street lighting * fully illustrated‎,‎ including illustrations new to the fourth edition‎.‎