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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 ]
An electrical code is a term for a set of regulations for the design and installation of electrical wiring in a building. The intention of such regulations is to provide standards to ensure electrical wiring systems are safe for people and property, protecting them from electrical shock and fire hazards. They are usually based on a model code ...
Entitled 'Regulations for Electrical Installations'. Issued with red cover. Amended and reprinted in 1983 (green cover), 1984 (yellow cover), amended in 1985, amended and reprinted in 1986 (blue cover; to remove voltage operated earth leakage circuit breakers), 1987 (brown cover), and finally just reprinted with minor corrections (no amendment ...
Regulations in each jurisdiction will indicate when a change to an existing installation is so great that it must then be rebuilt to comply with the current electrical code. Generally existing installations are not required to be changed to meet new codes. Other code requirements vary by jurisdiction in the United States.
IEC 60364 Electrical Installations for Buildings is the International Electrotechnical Commission (IEC)'s international standard on electrical installations of buildings.This standard is an attempt to harmonize national wiring standards in an IEC standard and is published in the European Union by CENELEC as "HD 60364".
Such wiring systems were unsatisfactory because of the danger of electrocution and fire, plus the high labour cost for such installations. The first electrical codes arose in the 1880s with the commercial introduction of electrical power; however, many conflicting standards existed for the selection of wire sizes and other design rules for ...
Homes typically have several kinds of home wiring, including electrical wiring for lighting and power distribution, permanently installed and portable appliances, telephone systems, heating or ventilation system control, and increasingly for home theatre and computer networks.
This standard specifies the technical criteria for various components and aspects of the alarm systems, such as installation requirements, enclosures, electrical protection, field wiring connections, internal wiring, and the performance of components under normal and abnormal conditions.