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May 21, 2009 A Penton Media Publication Vol. VII No. 10

Notice of Public Hearing

What's Wrong Here?

Code Q&A

Code Quiz

Enroll In EC&M University's Online Arc Flash Courses


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    Code News Update
    Notice of Public Hearing
    The Department of Energy, Labor & Economic Growth, Bureau of Construction Codes, will hold a public hearing on Thursday, June 11, 2009, at 9:30 a.m. in Conference Room 3, 1st floor, 2501 Woodlake Circle, Okemos, Michigan 48864. The hearing will receive and review public comments on adoption of the 2008 edition of the National Electrical Code and Michigan-specific amendments in the state of Michigan. The proposed rules will be published in the June 1, 2009 Michigan Register. Oral or written comments may be presented in person at the hearing or submitted in writing by mail, email, or facsimile no later than 5:00 p.m., June 11, 2009.

    You may download a free copy of the proposed Michigan amendments to Part 8 — Electrical Code Rules by visiting the Department's Web site. The proposed effective date of the rule set is 60 days after filing with the Secretary of State.

    Have a UL White Book but not sure how to use it? Discover why the UL White Book is Part 2 of the NEC and how it will help you avoid "Red Tagged" jobs. Click here to learn how to use the White Book online FREE (or to order a copy).

    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: Sunstroke conduit

    Code Q&A

    By Mike Holt

    Q. What are the requirements for grounding metal equipment racks supporting computer servers?

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

    Code Quiz

    By Steven Owen

    With respect to Hazardous (Classified) locations, including Class I Group Classifications, certain chemical atmospheres may have characteristics that require safeguards beyond those required for any of the Class 1 groups. One such chemical may explode when mixed with air. What is that chemical?

    1. Acetylene
    2. Hydrogen
    3. Carbon disulfide
    4. Carbon monoxide.

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

    Avoid Safety Violations
    A dangerous shock hazard exists when electronics operate with the panel door open. Avoid the danger and OSHA fines. EXAIR’s low cost Cabinet Coolers stop electronic control downtime with cold 20 degree Fahrenheit air and maintain the NEMA 4, 4X and 12 rating of the enclosure. Thermostat control minimizes air usage. Web site offers detailed information, downloadable drawings and PDF literature. click here for more information

    Shows and Events
    Enroll In EC&M University's Online Arc Flash Courses
    Need Arc Flash prevention training and continuing education, but don't have a travel budget? That's no problem.

    EC&M University's e-Training Center is the answer! Just link to these live, online training courses directly from your computer. Each course will be presented in a concise and easy-to-understand manner by an industry acknowledged expert.
    • Arc Flash Testing Updates
      June 16, 2009

    • Arc Flash Hazard Mitigation Case Studies
      June 25, 2009
    For more information, go to To register online, go to

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