2005 National Electrical Code
The 2005 edition expands NEC® coverage, improves safeguards and brings provisions up-to-date with industry trends. Changes include added requirements for GFCI protection, revised rules for arc-fault circuit interrupters, new requirements for identification of ungrounded branch circuit and feeder conductors, new zone hazardous area classification system for combustible dusts, and ignitable fibers and flyings, and rearranged electrical calculation requirements in Article 220. |