The 2005 edition of the National Electrical Code incorporates some of the most sweeping changes ever to make the electrical code more functional and user-friendly. Complete with many significant and widespread changes, the 2005 NEC contains all the latest electrical technologies, and enhanced safety standards for electrical work.

The entire electrical industry relies on the NEC for the most up-to-date information, and electrical professionals are expected to know it well, even if it has not yet been adopted by their local or state jurisdictions.