March 27, 2006 A Prism Business Media Publication Vol. IV No. 6

The List of Lists

90.1 Purpose of the NEC

What's Wrong Here?

Code Q&A

Code Quiz

Code Quiz Correction

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

2006 World Safety Conference & Exposition

About this Newsletter
This twice-a-month
e-newsletter is brought to you from the publisher of EC&M magazine.

CodeWatch will:

  • Let you know what could be changing in the Code®.
  • Help you brush up on your ability to apply the Code®.
  • Test your knowledge of the Code® with a Q&A format.
  • Introduce you to the people who vote on the rule changes.
  • Provide information on upcoming Code® seminars and shows.
  • Give you an opportunity to sound off on Code®-related issues.

    We want to make sure we're providing you with the content you need to better manage your business or enhance your technical skills. E-mail us and let us know what you want to see in future issues of this e-newsletter. We will do our best to address your request in a future issue of CodeWatch.

  • Subscriptions
    To unsubscribe from this newsletter go to: Unsubscribe

    To subscribe to this newsletter, go to: Subscribe

    To get this newsletter in a different format (Text or HTML), or to change your e-mail address, please visit your profile page to change your delivery preferences.

    Back Issues
    Missed an issue? Visit the CodeWatch archive on EC&M's Web site.

    Tell a friend about CodeWatch
    Do you know of someone who'd like to receive CodeWatch? Visit the subscriber site, enter their e-mail address and spread the wealth!

    To find out how to advertise in this newsletter, e-mail David Miller or call him at (312) 840-8497.

    The designations "National Electrical Code” and “NEC” refer to the National Electrical Code®, which is a registered trademark of the National Fire Protection Association.



    Top 50 NEC Rules
    The List of Lists
    Everyone likes to see lists of the top items in a particular subject area, right? For instance, David Letterman's humorous top 10 lists, the Fortune 500 listing, or People magazine's top celebrity listing. Heck, we even publish our own Top 40 Design Firms and Top 50 Contractors lists in EC&M.

    In speaking with NEC expert Mike Holt, I recently learned that Mike Holt Enterprises has a Top 50 NEC Rules listing. We view this list as sort of a "NEC basics must know rules" listing. We also thought it would be worthwhile to share this list with you, one rule at a time, over the next 50 issues of CodeWatch. Consider this a great way to remind yourself and others of the key rules noted in our most important industry standard.

    Note: We'll present the rules to you in the numerical order in which they appear in the NEC.

    90.1 Purpose of the NEC

    By Mike Holt
    The NEC is meant to safeguard persons and property from the hazards that arise from the use of electricity. The Code is not meant to serve as a design specification or an instruction manual for untrained persons. Compliance with the rules of the Code and proper maintenance will result in an installation that is free from hazard.

    Achieve Your Performance Goals
    Anticipate, prevent and troubleshoot motors, electrical and equipment maintenance with fast, accurate non-contact temperature measurements with Fluke infrared thermometers.

    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: Are these conduits properly installed?

    Code Q&A
    By Mike Holt
    Q. What is the minimum burial depth requirement for residential service lateral conductors installed in rigid nonmetallic conduit?

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

    Code Quiz
    By Steven Owen
    Q. Disregarding the Exceptions in 225.32, when are you not required to install a disconnecting means for a building or structure at the building or structure? Hint: A structure is defined as "that which is built or constructed." A structure could include (but not be limited to) a generator, a communications tower, or possibly a piece of plywood attached to a 4-inch by 4-inch wooden post inserted into the ground (supporting electrical equipment).
    A) Never
    B) When the disconnecting means is capable of being remotely controlled
    C) Where a generator housed outdoors is equipped with a readily accessible disconnecting means located within sight of the building or structure
    D) When the disconnecting means has ground-fault protection integral to it

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

    Code Quiz Correction
    By Steven Owen
    The answer to the question in the last issue was incorrectly shown as: A) fire alarm systems. In retrospect, I should have added a fifth option, which read as follows: E) none of the above. This would be the correct answer in this case.

    All of the items listed in the question require secure support in hollow spaces above suspended ceilings. The fire alarm circuits are already installed exposed on the surface of the ceiling. Therefore, the issue of support for 300.11 is not an issue in this example. Sorry for the error.

    10 Steps of an Effective Arc Flash Hazard Safety Program from ESA
    Developing and implementing an arc flash hazard program that meets the requirements of IEEE 1584, NFPA 70E, and OSHA Standard 29 is challenging. Meeting these requirements on a constrained budget and with limited manpower assets requires proper planning and execution. Our informative guide, "10 Steps of An Effective Arc Flash Hazard Safety Program," is the perfect resource to help you get started.
    Offer code: WA0517

    Speak Out
    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.

    Cool Electronic Cabinets
    EXAIR's low cost Cabinet Coolers stop electronic control downtime due to heat, dirt and moisture. UL Listed Cabinet Coolers produce 20 degree Fahrenheit air from an ordinary supply of compressed air to cool electrical controls. Thermostat control minimizes air usage. Maintains the NEMA 4, 4X (stainless steel) and 12 rating of the enclosure. Web site offers detailed information, downloadable drawings and PDF literature.

    Shows and Events
    2006 World Safety Conference & Exposition
    The 12 sessions that make up the necforumTM 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.

    Connected & Protected
    IDEAL's new WeatherProof™ Wire Connectors are the fastest, easiest and safest way to connect wires in damp or wet locations. Pre-filled with a silicone-based sealant and UL listed to 486D, these connectors protect conductors from moisture, humidity and other corrosive elements. Visit to request a free sample.

    You are subscribed to this newsletter as #email#

    For questions concerning delivery of this newsletter, please contact our Customer Service Department at:
    Customer Service Department
    A Prism Business Media publication
    US Toll Free: 866-505-7173
    International: 847-763-9504

    Prism Business Media
    9800 Metcalf Avenue
    Overland Park, KS 66212

    Copyright 2006, Prism Business Media. All rights reserved. This article is protected by United States copyright and other intellectual property laws and may not be reproduced, rewritten, distributed, re-disseminated, transmitted, displayed, published or broadcast, directly or indirectly, in any medium without the prior written permission of Prism Business Media.