The following are links to various resources provided by the Electrician’s Toolbox website (http://www.elec-toolbox.com) and a few other websites.
Introduction from the website:
Knowledge and the practical application of the National Electrical Code is an essential part of all electrical installations. If it’s important for you to understand the National Electrical Code, then look no further. The many NEC resources available Free on this site include a Code Forum where you get your questions answered an E-Newsletter that keeps you informed on important industry issues lots of Free Stuff such as spreadsheets, as well as a great NEC Quiz. In addition, the site contains lots of information about important Technical subjects, and Exam Preparation information including Free Online Testing for both the 1999 and 2002 NEC.