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The National Electrical Code, 2008 edition. The National Electrical Code (NEC), or NFPA 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the United States. It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association. [1]
The United States National Electrical Code requires a bare copper, or green or green/yellow insulated protective conductor, a white or grey neutral, with any other colour used for single phase. The NEC also requires the high-leg conductor of a high-leg delta system to have orange insulation, or to be identified by other suitable means such as ...
NFPA 72 — National Fire Alarm Code; NFPA 704 — Standard System for the Identification of the Hazards of Materials for Emergency Response; NFPA 853 — Standard for the installation of stationary fuel cell power systems; NFPA 921 — Guide for Fire and Explosion Investigations; NFPA 101 — Life Safety Code; NFPA 1123 — Code for Outdoor ...
The NEC Zone system was created to harmonize with IEC classification system, and therefore reduce the complexity of management. Canada has a similar system with CSA Group standard C22.1, the Canadian Electrical Code , which defines area classification and installation principles.
The United States National Electrical Code (NEC) specifies minimum acceptable wiring methods and materials for many states and municipalities. [2] It is sponsored by the National Fire Protection Association (NFPA) and has been periodically revised since 1897. Local jurisdictions usually adopt the NEC or another published code and then ...
The NEC contracts now form a suite of contracts, with NEC being the brand name for the "family" of contracts. [16] When it was first launched in 1993, it was simply the "New Engineering Contract". This specific contract has been renamed the "Engineering and Construction Contract" which is the main contract used for any construction based project.