Book excerpt: Build a firm foundation in NEC basics with the 2005 Edition of User's Guide to the National Electrical Code. NFPA's full-color illustrated guide walks you through the 2005 Code, explaining key principles, such as the difference between GFPE and GFCI equipment. With this text you'll understand the intent behind the most critical NEC requirements, the way NEC chapters and articles work together, and how the NEC is related to other electrical standards and building codes. The User's Guide is the key to getting the right answers, faster and more efficiently! Written by H. Brooke Stauffer of the National Electrical Contractors Association (NECA), this primer shows you how to find answers in today's NEC(R), significantly improving your productivity and effectiveness on the job. User's Guide to the National Electrical Code(R) is the ideal starting point for electrical apprentices and a useful reference for experienced professionals. Use it alongside your 2005 Code!