Send to a Friend View / Add Comments  

Some of you have completed our Online Continuing Education Courses which include video instruction. For the rest of you we are sending a weekly series of newsletters featuring an instructional page complete with videos.

To view the videos you will need to download the free Real Player Download Real Player plugin for your browser - if you don't already have it. After installing Real Player, you can view the videos by clicking on one of these icons:

  • Click on this icon Hi Res - Cable/DSL [5622Kb] if you have a cable or DSL connection.
  • Click on this iconLow Res - Modem [1695Kb] if you have a Dial-up connection.

Below is the full course page which includes these videos:

Article 300 Low Res - Modem [1695Kb] Hi Res - Cable/DSL [5622Kb]        Page 9 of 9
Wiring Methods

300.15 Boxes, Conduit Bodies, or Fittings – Where Required

This subsection was completely revised to read:

(I) Enclosures. A box or conduit body is not required where a splice is made in a cabinet or cutout box for switches or overcurrent devices as permitted in 312.8, in a motor controller as permitted in 430.10(A), or in a motor control center.

Intent: This change, clarifies that splices and taps are permitted in cabinets, cutout boxes, or meter socket enclosures if the splice or tap does not fill the wiring space at any cross-section to more than 75 percent in accordance with 312.8. Figure 300–4

Author’s Comment: Cabinet and cutout boxes can be used for conductors feeding through where the conductors do not fill the wiring space at any point to more than 40 percent of the cross-sectional area of the space [312.8].

Figure 300–4
Click on Image to Enlarge
  [ Back to Top ]

Copyright © 2003 Mike Holt Enterprises,Inc.
1-888-NEC-CODE (1-888-632-2633)