includes a new visual feature to highlight all changes to the 2005 code making it easier for the reader to quickly scan the complete code for all changes for installation purposes the 2005 nec code will have significant changes through out the code; for that reason this companion installation book will mirror those changes, as well as discrete additional changes specific to installation in chapter 1 for workmanship and installer responsibility and grounding; chapter 2 for required circuits and load calculations, chapter 3-grounding f or feeder panels; chapter 4-ratings for services; chapter 6 grounding-definitions; chapter 7-ampacity tables in wiring, types of installations; chapter 8-dealing w/old installations, etc.