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January 7, 2010 A Penton Media Publication Vol. VIII No. 1

Pending Code Change Item for 2011 NEC

What's Wrong Here?

Code Q&A

Code Quiz

Delaware Adopts 2008 NEC

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 4 has voted to accept a Code change submitted by Joel A. Rencsok of Scottsdale, Ariz. (Log #307 NEC-P04). The recommendation calls for adding a new section to Art. 225, which states:

    "Raceway Seal. Where a feeder raceway enters a building or structure from an underground distribution system, it shall be sealed in accordance with 300.5(G). Spare or unused raceways shall also be sealed. Sealants shall be identified for use with the cable insulation, shield or other components."

    As noted in the substantiation summary, feeders entering buildings or other structures are no different than services. The requirements should be the same as noted in 230.8.

    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.

    Imagine the possibilities.
    The New Fluke 233 Remote Display Digital Multimeter allows you to be in two places at once. The removable magnetic display allows you to be 30 feet away from the measurement point. See how it will expand your capabilities.

    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: Working clearance

    Code Q&A
    By Mike Holt
    Q. How many feet of track lighting can I install on a 20A circuit?

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

    Code Quiz
    By Steven Owen
    When installing underground service conductors to a building or structure, where the service conductors are installed in a trench that has 24 in. of cover, what marking is required at what distance above the underground installation? The underground service conductors are not encased in concrete.

    1. Marking is not required. Therefore, no distance is specified.
    2. A pressure-treated piece of lumber (2x4, painted red) is required to be installed directly over the underground installation.
    3. A red warning ribbon placed 24 in. above the underground installation is required.
    4. A yellow warning ribbon placed 12 in. above the underground installation is required.

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

    Cool Electronic Cabinets
    Stop electronic control downtime due to heat, dirt and moisture. EXAIR Cabinet Cooler® Systems produce 20 degree Fahrenheit air from an ordinary supply of compressed air to cool electrical controls. Thermostat control minimizes air usage. Cabinet Coolers are UL Listed and maintain the NEMA 4, 4X and 12 rating of the enclosure. Web site offers detailed information, a video, CAD drawings, and PDF literature.

    Code News Update
    Delaware Adopts 2008 NEC
    According to a recent Code Alert issued on Dec. 17, 2009 by the National Electrical Manufacturers Association (NEMA), the Delaware State Fire Prevention Commission announced the state had adopted the 2008 NEC with an effective date of Nov. 11, 2009. The Code was adopted in its entirety with just two amendments.

    Three additional sentences were added to Sections 210.12(B) and 550.25(B). They read as follows: "Smoke alarms shall not be placed on branch circuits protected by arc-fault circuit interrupters. All smoke alarms shall be supplied by branch circuits dedicated to smoke alarm equipment. The connection of the smoke alarm branch circuit to the power service shall be mechanically protected by utilizing lock-on devices."

    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.

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