The 2005 National Electrical Code® is updated and revised, and is organized better safeguards, add greater usability, and bring provisions in-line with technology trends. New content includes:

Revisions include:

• Expanded AFCI protection in wiring systems
• New rules for GFCI protection
• Identification of ungrounded branch circuit and feeder conductors
• All-new articles for control panels and speed-drive systems
• Reorganized rules in Article 220: Branch Circuit, Feeder and Service Calculations
• New zone hazardous area classification system for combustible dusts and ignitable fibers and flyings