Intrinsically Safe Apparatus

Intrinsically safe apparatus, associated apparatus, and other equipment must be installed in accordance with the _____ drawing(s).

a) approved
b) control
c) identified
d) any of the above

See answer and applicable Code reference

The correct answer is: b) control

Article 504 of the 2011 NEC focuses on the requirements for Intrinsically Safe Systems. As noted in Sec. 504.10(A), "Intrinsically safe apparatus, associated apparatus, and ot

Register to view the full article

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

Hide 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.