Changes in the 2002 National Electrical Code

The 2002 edition of the National Electrical Code (NEC) was published in September 2001. A number of changes have been made that effect the entire NEC as well as individual changes related to wire and cable. The 2002 NEC will utilize SI units as the primary units with inch-pound units secondary. Chapter 3 has been completely reorganized and renumbered for consistency and to enhance usability.