84 kr
Läs direkt efter köp
84 kr
Läs direkt efter köp
84 kr
Läs direkt efter köp
131 kr
Skickas inom 7-10 vardagar
570 kr
Skickas inom 3-6 vardagar
621 kr
Läs direkt efter köp
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 edition615 kr
Läs direkt efter köp
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 edition544 kr
Skickas inom 5-8 vardagar
906 kr
Läs direkt efter köp
915 kr
Läs direkt efter köp
840 kr
Skickas inom 5-8 vardagar
This volume sets out for the first time the historical and current status of all the bird species found in Wales together with their present distribution. The rugged countryside of Wales has long been a destination for successive generations of naturalists, ornithologists, oologists and, latterly, birdwatchers. Since the pioneering days of Willoughby and Ray, Pennant and Edward Llwyd, a growing number of intrepid travellers have recorded the wildlife and other natural riches of the mountains and coastlines of Wales. Despite these beginnings and the more recent twentieth century vogue for birdwatching, no volume on the birds of Wales has been produced until now to serve the increasing need for scientifically valid information for conservation purposes. In the years that have passed since the first naturalists visited Wales, changes of unimaginable scale have taken place in the Welsh countryside which have had equally dramatic impacts on the native bird communities. A succession of bird species have either been eliminated deliberately by the hand of man - mainly birds of prey - or have been dispossessed by changes in land use, the spread of industrialisation, urbanisation and pollution, trends which continue today to the increasing detriment of even some of our most familiar countryside birds. Much fine habitat remains however, and new species have come in to colonise Wales and add to the magic of its countryside. The three authors, all staff of the RSPB in Wales, have between them an accumulated experience of some 80 years of first-hand knowledge of birds in the Principality. Their knowledge and love of the birds and Wales itself makes this authoritative volume a landmark both in Welsh and ornithological publishing.