by Alvin J. Walker (Author), Alvin J. Walker (Illustrator), Ted Ruybal (Designed by)

Volume 2 is the second of four volumes relating to the book title, "The 2011 National Electrical Code Book of In-Depth Calculations." This volume is a reflection of Chapters 1 through 3 of the National Electrical Code (NEC) that focus on a variety of selected Articles where certain portions of the featured Article require some type of an electrical calculation to be performed. From sizing conductors and overcurrent devices supplying branch circuits, feeders and service wiring to sizing boxes or cable tray, Volume 2 is by far, an all-inclusive-one stop reference. Combined, Volume 2 contains over 250 challenging questions and answers along with custom illustrations to advance the understanding of the user.