National Electrical Code
The National Electrical Code (NEC), also known as NFPA 70 , is a safety standard of the United States of America . This formulates specifications for the execution of electrical installations . The standard is recognized by the American National Standards Institute (ANSI). Under the designation ANSI / NFPA 70, it is part of the standards and codes of conduct published by the National Fire Protection Association (NFPA).
General
The standard specifies the form in which electrical installations and their parameters such as operating voltages , the type of cable routing in the low-voltage range for electrical power supply , electrical fuses or the NEMA plugs that are common in North America are to be designed. It is divided into nine chapters and several appendices. The NEC was first published in 1897 and is updated every 3 years. In many US states, the standard is being revised slightly to be adapted to local needs.
Chapter 500 contains the explosion protection regulations in the USA. The international explosion protection regulations IEC / EN 60079 have also been included under Chapter 505 for several years.
The standard is largely comparable to the DIN VDE 0100 series of standards published in Germany by the Association of Electrical, Electronic and Information Technologies (VDE) . In contrast to the DIN VDE standards, there is a legal obligation in the USA that safety standards such as the NEC must be available free of charge and not be subject to copyright restrictions.
literature
- National Fire Protection Association: National Electrical Code: Nfpa 70 . 2008th edition. Delmar, ISBN 978-0-87765-790-3 .
- Terrell Croft, Wilford Summers (ed): American Electricians' Handbook . 11th edition. McGraw Hill, New York 1987, ISBN 0-07-013932-6 .
Individual evidence
- ^ Christian Bücker: News Release EA2208 . Eaton - Electrical Sector (EMEA) Marketing Communication, Bonn May 19, 2014.
- ↑ NFPA 70 (National Electrical Code) (Eng.)