View this email as a Web page Please add Code Watch to your Safe Sender list.

December 27, 2007 A Penton Media Publication Vol. V No. 24


CONTENTS
408.4 Circuit Directory or Circuit Identification

What's Wrong Here?

Code Q&A

Code Quiz

Electric West


About this Newsletter
This twice-a-month
e-newsletter is brought to you from the publisher of EC&M magazine.

CodeWatch will:

  • Let you know what could be changing in the Code®.
  • Help you brush up on your ability to apply the Code®.
  • Test your knowledge of the Code® with a Q&A format.
  • Provide information on upcoming Code® seminars and shows.
  • Give you an opportunity to sound off on Code®-related issues.

    We want to make sure we're providing you with the content you need to better manage your business or enhance your technical skills. E-mail us and let us know what you want to see in future issues of this e-newsletter. We will do our best to address your request in a future issue of CodeWatch.


  • Subscriptions
    To unsubscribe from this newsletter go to: Unsubscribe

    To subscribe to this newsletter, go to: Subscribe

    To get this newsletter in a different format (Text or HTML), or to change your e-mail address, please visit your profile page to change your delivery preferences.


    Back Issues
    Missed an issue? Visit the CodeWatch archive on EC&M's Web site.

    Tell a friend about CodeWatch
    Do you know of someone who'd like to receive CodeWatch? Visit the subscriber site, enter their e-mail address and spread the wealth!


    Advertising
    To find out how to advertise in this newsletter, e-mail David Miller or call him at (312) 840-8487.

    The designations "National Electrical Code” and “NEC” refer to the National Electrical Code®, which is a registered trademark of the National Fire Protection Association.

     
    ADVERTISEMENT



    ADVERTISEMENT

    ADVERTISEMENT



    ADVERTISEMENT




    ADVERTISEMENT


    Top 50 NEC Rules















    408.4 Circuit Directory or Circuit Identification

    By Mike Holt
    All circuits and circuit modifications must be legibly identified as to their clear, evident, and specific purpose. The identification must include sufficient detail to allow each circuit to be distinguished from all others, and the identification must be on a circuit directory located on the face or inside of the door of a panelboard.

    Editor's note: This information was extracted from Mike Holt's textbook, Understanding the National Electrical Code


    ADVERTISEMENT
    Escape winter weather: Register for the EasyPower training coming to Scottsdale, Arizona January 21 - 25, 2008! Streamline the implementation of your Arc Flash and Electrical Safety Program. What used to take hours, now takes mere seconds! EasyPower delivers Windows-based tools for designing, analyzing, and monitoring electrical power systems. 2-Day Automated Design class will also be held January 28 - 29, 2008
    www.easypower.com/support_training.php


    Code Challenge
    What's Wrong Here?

    By Joe Tedesco

    Think you know how this installation violates the NEC?

    Visit EC&M's Web site to see the answer.

    Hint: Low rent, no heat


    Code Q&A
    By Mike Holt
    Q. Is there any allowance in the NEC to locate receptacles in dwelling units where it is convenient for furniture layout or the designer's wishes, if the required number of receptacles is installed?

    Visit EC&M's Web site to see the answer.


    Code Quiz
    By Steven Owen
    Q. For a 20A, 125V, single-phase receptacle that supplies power to a cord-and-plug connected metering pump, which is integral to a continuous industrial process that cannot tolerate an unexpected loss of power, installed outdoors in an industrial facility, the 20A receptacle __________. Note that qualified personnel maintain this industrial facility and an assured equipment grounding conductor program is in place.

    1. has no special requirements in this example.
    2. must have a weatherproof cover per 406.8(B)(1) only.
    3. must have a weatherproof cover per 406.8(B)(1) and have GFCI protection.
    4. must have a weatherproof cover per 406.8(B)(1), however, it does not have to have GFCI protection.

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




    ADVERTISEMENT
    Cool Electronic Cabinets
    EXAIR's low cost Cabinet Coolers stop electronic control downtime due to heat, dirt and moisture. UL Listed Cabinet Coolers produce 20 degree Fahrenheit air from an ordinary supply of compressed air to cool electrical controls. Thermostat control minimizes air usage. Maintains the NEMA 4, 4X (stainless steel) and 12 rating of the enclosure. Web site offers detailed information, downloadable drawings and PDF literature.
    www.exair.com/15/540_12b.htm


    Shows and Events




    Electric West

    Year after year, electrical contractors, consultants, engineers, plant managers, and other electrical professionals make it their business to stay on top of the latest industry developments by attending the Electric West Conference program, schedule for Las Vegas from Feb. 27-29. It provides the tools you need to become more efficient, work faster, more profitably and stay ahead of the competition. Categories include:
    • Code Changes & Standards

    • Safety

    • Lighting

    • Residential Applications

    • Industrial Applications

    • Business Practices

    • Home Automation

    For 2008, the Power Quality segment will be expanded into its own separate conference. For more information and to register, visit the Electric West Web site.

    You are subscribed to this newsletter as #email#

    For questions concerning delivery of this newsletter, please contact our Customer Service Department at:
    Customer Service Department
    EC&M
    A Penton Media publication
    US Toll Free: 866-505-7173
    International: 847-763-9504
    Email:ecmweb@pbinews.com

    Penton | 1166 Avenue of the Americas, 10th Floor | New York, NY 10036

    Copyright 2014, Penton. All rights reserved. This article is protected by United States copyright and other intellectual property laws and may not be reproduced, rewritten, distributed, re-disseminated, transmitted, displayed, published or broadcast, directly or indirectly, in any medium without the prior written permission of Penton Media, Inc.