March 13, 2006 A Prism Business Media Publication Vol. IV No. 5




CONTENTS
The Hollow Ground Connection

What's Wrong Here?

Code Q&A

Code Quiz

NFPA 70E Standard: Speak Now, or Forever Hold Your Complaints

NEC Sessions Scheduled for 2006 NFPA World Safety Conference & Exposition


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    Nightmare Installations
    The Hollow Ground Connection
    I was called to perform some work in an area containing a small building and six tennis courts, which were scheduled for demolition. The feeder conductor was 3/0 copper, and it was connected to a 200A breaker in a separate building. After disconnecting the feeder to the subpanel, I saw what looked like a No. 4 ground wire connected to a ground rod. I grabbed my intermediate size cutters and was surprised at how easy it was to snip it. I then took a closer look at the "acorn" on the ground rod and the connection at the ground bar and noticed that the ends of this "wire" were flattened. The original installer had used a piece of 1/8-inch copper water tubing for the connection!
    Mike Walker
    Columbus, Ohio



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    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: Is this a new type of splice box?


    Code Q&A
    By Mike Holt
    Q. Can we install coaxial cables inside the duct work of an existing building?

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


    Code Quiz
    By Steven Owen
    Q. The installation of fire alarm circuits (Art. 760), communication circuits (Art. 800), CATV and radio distribution systems (Art. 820), and network powered broadband communication systems (Art. 830) installed in the hollow space above a suspended ceiling does not require secure support independent of the existing wires used to support the ceiling for which of the following?
    A) fire alarm systems
    B) communication systems
    C) community antenna television systems / radio distribution systems
    D) network powered broadband communication systems (voice and data)

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


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    Code News Update
    NFPA 70E Standard: Speak Now,
    or Forever Hold Your Complaints

    In accordance with the Regulations Governing Committee Projects, the NFPA committee for the Standard for Electrical Safety in the Workplace (NFPA 70E-2004) is now accepting proposals for recommendations on content. So if you've got a beef with the current wording in this document, or feel some additional information needs to be added, then speak up now and let your voice be heard. The committee will act on proposals received by 5 p.m. ET on Sept. 15, 2006, and that action will be published in the committee's report. All proposals must be submitted to Codes and Standards Administration on proposal forms available in the back of all NFPA documents or from NFPA headquarters.


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    Shows and Events
    NEC Sessions Scheduled for 2006 NFPA World Safety Conference & Exposition
    The 12 sessions that make up the necforum are designed to help you consider new electrical design issues, analyze maintenance programs, review best practices in the electrical contracting arena, learn effective inspection techniques, and implement practical safety programs. If these topics interest you, then make plans to fly to Orlando in early June and take part in this year's event, which will be held from June 2-8, 2006. Visit the NFPA World Safety Web site for additional details.


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