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May 19, 2011
Vol. IX, No. 10

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   EC&M's CodeWatch
  Today's Headlines
 Vote for the 2011 Product of the Year and Qualify for a Chance to Win $100!
 What's Wrong Here?
 Code Q&A
 Code Quiz

Important Notice


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Code Violations

What's Wrong Here?

By Joe Tedesco

Think you know how this installation violates the NEC?

Visit EC&M's website to see the answer.

Hint: These "wire capsules" are not available for purchase.

Code Quandaries

Code Q&A

By Mike Holt

Q. When can power distribution blocks be installed in junction boxes?

Visit EC&M's website to see the answer.

Code Challenge

Code Quiz

By Steven Owen

When installing feed-through conductors in switch and overcurrent device enclosures, what new requirement was added in the 2011 edition of the NEC?

  1. A warning label shall be applied to the enclosure that identifies the closest disconnecting means for any feed-through conductors.
  2. The total area of all conductors, splices, and taps installed at any cross section of the wiring space must not exceed 75% of the cross-sectional area of that space.
  3. The total area of all conductors installed at any cross section of the wiring space must not exceed 40% of the cross-sectional area of that space.
  4. Feed-through conductors of any circuit are not allowed to be placed in any switch or overcurrent device enclosure.


Visit EC&M's website for the answer and explanation.

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ON DEMAND MEDIA

Understanding NEC Requirements for Solar Photovoltaic Systems
EC&M partnered with NEC expert Mike Holt to present a one-hour webinar covering the most important Code requirments for solar PV systems. This event is now available on demand here via the EC&M website.

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