nec logo

The NEC Zone System

If you are new to the Zone system, know the applicable protection methods and definitions

Articles 501, 502, and 503 of the National Electrical Code (NEC) provide the requirements for Class I, Class II, Class III locations, respectively. The Location is further identified as Division 1 (combustibles present under normal conditions) or Division 2 (combustibles present only during abnormal conditions).

Register to view the full article

Register on EC&M and gain access to premium content, including this article and much more.

Hide comments

Comments

  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Publish