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November 6, 2008 A Penton Media Publication Vol. VI No. 21

250.146 Connecting Receptacle Grounding Terminal to Box

What's Wrong Here?

Code Q&A

Code Quiz

Code Committee Call-Up

Electric West 2009


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    Top 2008 Code Changes

    250.146 Connecting Receptacle Grounding Terminal to Box

    By Mike Holt
    A new sentence in section (A) Surface-Mounted Box adds bonding requirements for receptacles attached to exposed work covers.

    An equipment bonding jumper is not required for receptacles attached to listed exposed work covers when the receptacle is attached to the cover with two permanent fasteners (rivets), or have a threaded or screw locking means; and the cover mounting holes are located on a flat non-raised portion of the cover.

    This rule was added because exposed work covers with two fasteners to attach the receptacle to the cover are listed as a suitable bonding means.

    The Fluke 1735 Power Logger is the ideal electrician or technician's power meter for conducting energy studies and basic power quality logging. Set the Power Logger up in seconds with the included flexible current probes and color display. The power quality meter measures most electrical power parameters, harmonics, and captures voltage events.

    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: Fried food for dinner?

    Code Q&A
    By Mike Holt
    Q. What is the maximum height that a safety switch can be installed?

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

    Code Quiz
    By Steven Owen
    Q. The insulation of batteries rated greater than 250V may be all but which of the following?

      1. Air may be the insulating material if a minimum separation of 2 inches is maintained between live battery parts of opposite polarity (battery voltage not exceeding 600V).
      2. Air may be the insulating material if a minimum separation of ½ inch is maintained between live battery parts of opposite polarity (battery voltage not exceeding 600V).
      3. Bakelite or other insulating material.
      4. Mycarta or other insulating material.

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

    Escape the cold weather! Join us for EasyPower training in Orlando, Florida, January 12 - 16, 2009. Streamline the implementation of your Arc Flash and Electrical Safety Program. Experience the fastest, most accurate Windows®-based tools for designing, analyzing, and monitoring electrical power systems. This seminar fills up quickly; download a brochure and register by December 29th! Watch EasyPower in action through our online videos:

    Code News Update
    Code Committee Call-Up
    Got some extra time on your hands? Looking to put some of your vast knowledge of the electrical field to use? NFPA is looking for new members for several of its committees, including the following:
    • Committee on Electrical Equipment Evaluation (seeking members in all interest categories).
    • Committee on Electrical Systems Maintenance (seeking members in all interest categories, except special experts). This committee is responsible for NFPA 73, Electrical Inspection Code for Existing Dwellings.
    Anyone interested in serving can download the application form at NFPA’s Web site.

    Cool Electronic Cabinets
    Stop electronic control downtime due to heat, dirt and moisture. UL Listed Cabinet Coolers® from EXAIR 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. click here for more info

    Shows and Events

    Electric West 2009

    The Electric West Show, to be held March 18-20, 2009 at the Las Vegas Convention Center in conjunction with the Power Quality Reliability Conference, 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, there's something for everyone at the Electric Show. The biggest electrical marketplace in the western United States, this event attracts 250 exhibiting companies and more than 6,000 attendees every year. Here's a preview of some of the NEC seminars planned for next year's event:
    • One- and Two-Family Dwelling Unit Electrical Systems
    • Changes to the 2008 NEC
    • Swimming Pools and Similar Installations (NEC Article 680)
    • Introduction to the 2009 NFPA 70E
    For more information, visit our Web site.

    Eliminate Red Tags

    It takes more than the UL Mark on a product to satisfy code requirements. Before your next installation, use UL's Code Compliance Database to identify the correlation between model codes and UL Certified products, as well as find manufacturers of certified products.

    Click here today to find up-to-date UL Listed products at the UL Code Correlation Database.

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