This 2014 National Electrical Code (NEC) Changes - Wiring and Protection - Online Anytime course is the second of several courses covering the changes in the 2014 edition of the National Electrical Code® (NEC®) created by the NFPA. Chapter 2 is primarily concerned with correctly sizing and protecting circuits. Every article in this chapter deals with different aspects of this purpose. The National Electrical Code® (NEC®) is the United States standard for the safe installation of electrical wiring and equipment. Since 1911 the NFPA® has been making updates to the NEC Code document. The NEC is updated and published every 3 years.