View this email as a Web page Please add ECM_Code Watch_ to your Safe Sender list.

October 23, 2008 A Penton Media Publication Vol. VI No. 20

250.94 Intersystem Bonding Terminal

What's Wrong Here?

Code Q&A

Code Quiz

State-by-State Electrical Regulations

Electric West 2009


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!

    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.





    Top 2008 Code Changes

    250.94 Intersystem Bonding Terminal

    By Mike Holt
    A new rule requires an intersystem bonding terminal for communications systems. According to Art. 100, an intersystem bonding terminal is a device that provides a means to connect communications systems grounding and bonding conductors to the building grounding electrode system.

    An external accessible intersystem bonding terminal for the grounding and bonding of communications systems shall be provided at service equipment and disconnecting means for buildings or structures supplied by a feeder. The intersystem bonding terminal shall not interfere with the opening of any equipment enclosure and be one of the following:

    1. Terminals listed for grounding and bonding attached to a meter socket enclosure.
    2. Bonding bar connected to the equipment grounding conductor with a minimum 6 AWG copper conductor.
    3. Bonding bar connected to the grounding electrode conductor with a minimum 6 AWG copper conductor.
    An Exception to this requirement notes that at existing buildings or structures, an external accessible means for bonding communications systems together can be:
    1. Nonflexible metallic raceway,
    2. Grounding electrode conductor, or
    3. Connection approved by the Authority Having Jurisdiction.
    A second Fine Print Note states communications systems shall be bonded to the intersystem bonding terminal in accordance with the following:
    • Antennas/Satellite Dishes [810.15 and 810.21]
    • CATV [820.100]
    • Telephone Circuits [800.100]
    It's important to note that all external communications systems must be bonded to the intersystem bonding terminal to minimize the damage to communications systems from induced potential (voltage) differences between the systems from a lightning event.

    This new requirement is one of several correlated proposals to improve the requirements related to the intersystem bonding and grounding of communications systems. This provides a more accessible, safer means of bonding all systems, such as power and communications, together.

    The Fluke 1735 Power Logger is the ideal electrician or technician's power meter for conducting energy studies and basic power quality logging. Set the Power Logger up in seconds with the included flexible current probes and color display. The power quality meter measures most electrical power parameters, harmonics, and captures voltage events.

    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: Floppy, droopy and lazy!

    Code Q&A
    By Mike Holt
    Q. How do you size the ground wire when running conductors in parallel?

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

    Code Quiz
    By Steven Owen
    Q. According to the 2008 NEC, one of the reasons why flame-resistant clothing and equipment is required is to protect qualified persons from the hazard of ______________?

      1. A gas discharge from an interrupting device.
      2. A non-insulated tool being dropped onto energized parts.
      3. The additional hazard of circuits operating at over 600 volts.
      4. Older equipment that is not properly maintained.

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

    EasyPower delivers the easiest-to-use, most accurate Windows®-based tools for designing, analyzing, and monitoring electrical power systems. Whether you're developing or implementing an Arc Flash Safety Program, you can rely on ESA to help. Take advantage of our free Arc Flash Videos, Arc Flash Book, Arc Flash Specification, Ten Step Guide and more. Check out the quick links on our website today!

    Code News Update
    State-by-State Electrical Regulations
    Looking for the latest electrical code, enforcement, and contractor/electrician licensing requirements for each state in the United States? Here's a good starting point. Check out this National Electrical Installation Standards (NEIS) state-by-state source listing maintained by the National Electrical Contractors Association (NECA) Chapters. This valuable list also includes agency contact information, which offers you the opportunity to make contact with key members of local enforcement authorities.

    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.

    Shows and Events

    Electric West 2009

    The Electric West Show, to be held March 18-20, 2009 at the Las Vegas Convention Center in conjunction with the Power Quality Reliability Conference, is the perfect place to brush up on the latest NEC topics -- and earn continuing education credits in the process. Geared toward electrical contractors, consulting & specifying engineers, electricians, and plant facility personnel, there's something for everyone at the Electric Show. The biggest electrical marketplace in the western United States, this event attracts 250 exhibiting companies and more than 6,000 attendees every year. Here's a preview of some of the NEC seminars planned for next year's event:
    • One- and Two-Family Dwelling Unit Electrical Systems
    • Changes to the 2008 NEC
    • Swimming Pools and Similar Installations (NEC Article 680)
    • Introduction to the 2009 NFPA 70E
    For more information, visit our Web site.

    Eliminate Red Tags
    It takes more than the UL Mark on a product to satisfy code requirements. Before your next installation, use UL's Code Compliance Database to identify the correlation between model codes and UL Certified products, as well as find manufacturers of certified products.

    Click here today to find up-to-date UL Listed products at the UL Code Correlation Database.

    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
    A Penton Media publication
    US Toll Free: 866-505-7173
    International: 847-763-9504

    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.