Thoroughly revised and expanded with hundreds of pages of new material to reflect changes in the 2011 NEC, McGraw-Hill's National Electrical Code 2011 Handbook, 27th Edition provides authoritative guidance and analysis to help you accurately interpret 2011 NEC rules. Co-author and working electrician, Frederic P. Hartwell, who has participated in the NEC process for almost thirty years, describes problems and difficulties in NEC provisions from an unbiased and practical perspective.

It does not duplicate NEC text and tables within its covers. Designed as an essential companion to the 2011 NEC, it contains over one-third more explanatory material and more than 1000 diagrams and photos within its convenient 6 x 9 inch format. Details on the background and rationale for specific code rules facilitate an in-depth understanding of the meaning and application of those rules. This must-have on-the-job reference helps your work pass inspection the first time.