Wireway Conductor Fill Limitation

The sum of the cross-sectional areas of all contained conductors at any cross-section of a metal wireway shall not exceed _____.

a) 50%
b) 20%
c) 25%
d) 75%

See answer and applicable Code reference

The correct answer is: b) 20%

Article 376 of the 2011 NEC presents the requirements for installation of metal wireways. As clearly noted in 376.22(A), "The sum of the cross-sectional areas of all contained conductors at any cross section of

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