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September 24, 2009 A Penton Media Publication Vol. VII No. 18



CONTENTS
Pending Code Change Item for 2011 NEC

What's Wrong Here?

Code Q&A

Code Quiz

California and the 2008 NEC



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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 18 has voted to accept a Code change submitted by Vince Baclawski, National Electrical Manufacturers Association, (Log #1166 NEC-P18). Baclawski recommended adding a second paragraph to 406.5 that would read as follows: "Receptacle faceplates mounted inside a box having a recessed-mounted receptacle, shall effectively close the opening and seat against the mounting surface." He notes, "the term 'effectively closed' is used in 110.12(A) to express the intent of the requirement, but to recognize the need for some tolerance in application of the requirement. The language in the existing text in 406.5 is absolute and does not afford listing standards any tolerance in applying the requirement."

    The document is open for public review and comment through October 23, 2009. You can download an electronic version of the report via the NFPA Web site.

    All interested parties are urged to read this report and submit their comments on the forms provided in the report. Each comment received on or before the closing date of the comment period will be considered and acted upon by the NEC Code Committee. The results of the committee action 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: Is that really Romex?


    Code Q&A
    By Mike Holt
    Q. What is the maximum length of raceway I can use where the conductor ampacity is not required to be adjusted for conductor bundling?

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


    Code Quiz
    By Steven Owen
    When installing wiring in escalators, moving walkways, platform lifts, stairway chairlift runways, machinery spaces, control spaces, or machine/control rooms (not including the traveling cables connecting the car, or counterweight and hoistway wiring), which of the following methods is not permitted?

    1. Rigid metal conduit, intermediate metal conduit, rigid nonmetallic conduit.
    2. Electrical nonmetallic tubing (ENT).
    3. Wireways.
    4. MC, MI or AC [unless otherwise permitted in 620.21(A) through (C)].

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



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    Code News Update
    California and the 2008 NEC
    The California Department of Housing and Community Development (HCD) proposes to adopt by reference the 2008 edition of the NEC, with amendments, into the 2010 California Electrical Code (CEC), California Code of Regulations, Title 24, Part 3. The amendments relate to the following sections of the NEC:
    • Article 334 (Nonmetallic-Sheathed Cable)
    • Article 394 (Concealed Knob and Tube Wiring)
    • Article 450 (Transformers and Transformer Vaults)
    • Article 625 (Electric Vehicle Charging System)
    In addition, the HCD has proposed to not adopt Articles 500, 501, 502, 503, 504, 505, 506, 510, 511, 513, 514, 515, 516, 517, 520, 522, 525, 530, 540, 547, 550, 551, 552, 553, 555, 604, 605, 610, 630, 640, 645, 647, 650, 660, 665, 668, 669, 670, 675, 685, 695, 701, and 760, as well as Annexes A, B, C, D, E, F, G, and H. These Code sections are not included because they do not fall within the occupancies regulated by the HCD.

    For a more detailed look at the thought process behind this adoption, you can review the links on this HCD Web page.



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