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March 11, 2010 A Penton Media Publication Vol. VIII No. 5



CONTENTS
Pending Code Change Item for 2011 NEC

What's Wrong Here?

Code Q&A

Code Quiz

California on Track with Adoption of New Codes

Electric West 2010



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    Change Proposals
    Pending Code Change Item for 2011 NEC
    As noted in the NEC Committee Report on Proposals, 2010 Annual Revision Cycle, Code-Making Panel 13 has voted to accept a Code change submitted by Thomas Guida, TJG Services, Inc. (Log #2915 NEC-P13). The recommendation calls for revising the text of Sec. 708.14(1), (2), (5), (7) and (8) as follows:

    "(1) All cables for fire alarm, security, sSignal systems and emergency communications wires shall be use shielded twisted pairs cables."

    "(2) Shields of cables for fire alarm, security, signal systems and emergency communications signal and communication wires shall be continuous."

    "(5) Conductors for all control circuits rated above 50V shall be installed with wire rated not less than 600V."

    "(7) RiserAll cables for fire alarm, security, signal systems and emergency communications communication cables shall be riser-rated and shall be 2-hour fire resistive cable or a listed 2-hour electrical circuit protective system."

    "(8) Control, monitoring, and power wiring to HVAC systems shall be 2-hour fire-resistive cable or a listed 2-hour electrical circuit protective system."

    As noted in the submitter's substantiation summary, these changes are meant to clarify which cable types require shielded twisted pairs, and which require riser ratings. Two hour fire resistive cable in conduit as required by 708.10(C)(1) is an electrical circuit protective system.

    You can download an electronic version of the report via the NFPA Web site.

    Although the comment period is now closed, the results of the committee action on all submitted comments will be published in the NEC Committee Report on Comments, which will be made available to all who request it. The Report on Comments mail date is scheduled for March 29, 2010.


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    Code Challenge
    What's Wrong Here?
    By Brian J. McPartland

    Think you know how this installation violates the NEC? Visit EC&M's Web site to see the answer.

    Hint: Size of feeder conductor


    Code Q&A
    By Mike Holt
    Q. Can a receptacle be used as a splicing device? In other words, can we use all four screws (hot and neutral) on the receptacle?

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


    Code Quiz
    By Steven Owen
    When installing outlet boxes for wall-mounted luminaires, when can you use No. 6 screws to secure the luminaire yoke to a plaster ring, which is attached to the wall-mounted outlet box?

    1. Never
    2. Only when the plaster ring is secured on all four corners.
    3. Only when the plaster ring has an properly sized equipment bonding jumper attached to it.
    4. When the wall-mounted luminaire weighs 6 lb or less, and is supported by no fewer than two No. 6 screws.

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


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    Code News Update
    California on Track with Adoption of New Codes
    According to a recent Code Alert issued on March 2, 2010 by the National Electrical Manufacturers Association (NEMA), California is moving forward with plans to adopt new building related codes. The alert states, "At the recent annual meeting of the California Building Officials (CALBO), California Building Standards Commission Executive Director Dave Walls announced that on Jan. 12, 2010, the Commission approved adoption of the 2010 California Building Code, 2010 California Residential Code, 2010 California Green Building Code, and the 2010 California Electrical Code."

    The new codes are scheduled to be published on or before July 1, 2010 with an enforcement date of Jan. 1, 2011. The alert also notes the 2010 California Electrical Code is based on the 2008 NEC with State amendments. The amendments are deemed minimal.


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    Shows and Events





    Electric West 2010

    The Electric West Show, to be held March 16-18, 2009 at the Las Vegas Convention Center, 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, the conference program will offer the following NEC seminars, presented by industry experts such as Mike Holt, Keith Lofland, and Edward Gorginian.
    • Analysis of 2011 NEC Changes
    • Understanding Important NEC Requirements
    • Dwelling Calculations
    • Advanced NEC Calculations
    • Grounding vs. Bonding
    • Swimming Pools and Similar Installations
    For more information, visit our Web site, or click here to register.

    FREE Expo Pass -- Click here to receive your complimentary pass to Electric West, a $55 value!


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