nec is published every 3 years 2011,2008 and so on
Follow national and international standards and codes.
In the USA, the National Electrical Code is NFPA 70. There are several national fire codes, including National Fire Code (also called Uniform Fire Code); NFPA 1 (National Fire Protection Association) and the International Fire Code (International Code Council). Each of these references hundreds of other codes and standards, including Life Safety Code, Building Code, Electrical Code, etc.
Electrical codes or the NFPA70 and the standers for electrical work and are in place to protected the public from bad wiring that can cause fire's and other hazards
This is the electrical code book used in the United States of America. Rules set out for electricians to use, to keep all electrical installations the same for all jurisdictions throughout the country. Different regions will have addendum's additional to the code to cover different regional climates and conditions.
National Association of Electrical Distributors was created in 1908.
National Electrical Contractors Association was created in 1901.
look at the question : "what are meez codes for 2010"
These industries have their own special codes that take into account the different physical conditions in trains and ships.
what are the codes
There are currently no web codes from 2010 that are valid in-game anymore.
E codes
role of national electric code in the design of electrical installation