September 23, 2005 A PRIMEDIA Property Vol. III No. 18


CONTENTS
Article 682 -- Natural and Artificially Made Bodies of Water

Tap Trouble

What's Wrong Here?

Code Q&A

Code Quiz

Code Committee Call-Up

Water Logged?

Grounding vs Bonding Seminar


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    Top 2005 Code Changes
    Article 682 -- Natural and Artificially Made Bodies of Water
    By Mike Holt
    This new article covers the installation of electrical wiring for, in, and adjacent to natural or artificially made bodies of water not covered by Article 680. This includes aeration ponds, fish farm ponds, storm retention basins, sewage treatment ponds, and irrigation channels.

    Behind the change: The scope of Article 680 was insufficient for covering such bodies of water, so only the requirements in Chapters 1 and 4 applied. Instead of expanding the Article, it was decided to add Article 682.


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    Nightmare Installations
    Tap Trouble
    I once had the job of rewiring an older home that had knob and tube wiring. The fuse box had been replaced with a circuit breaker panel, and some new branch circuits had been added for the electric range and clothes dryer. There was a studio apartment below the house in what at one time had been the garage. The branch circuit wiring there was NMS cable, but it was energized from one of the old knob and tube circuits connected to a circuit breaker. My intention was to locate the "home run" outlet box, route a new circuit to it and thus hot-up the room. After removing all the devices from their outlet boxes, I reenergized the circuit. To my surprise, all the outlet boxes still had a "hot" wire in them. The previous installer had tapped into the knob and tube in the floor space of the room above and drop circuit extensions to each box. So much for an easy fix.
    Paul Bramblett
    Houston


    Send your 200-word story to us and it may appear in a future issue of CodeWatch. Authors of stories chosen will receive $25.


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    Code Challenge
    What's Wrong Here?
    By Joe Tedesco
    Got a guess for how this installation violates the NEC? Visit EC&M's Web site to see the answer.

    Hint: This green light means "stop."

    Code Q&A
    By Mike Holt
    Q. Is a switch that is located in a bedroom but controls an outside light required to be AFCI protected?
    Visit EC&M's Web site to see the answer.

    Code Quiz
    By Steven Owen
    When installing a Combustible Gas Detection System (in industrial establishments with restricted public access, and using qualified personnel to service the installation) as a protection technique in a Class I hazardous (classified) location of Article 501, or a Zone location of Article 505, all but which of the following items shall be documented?

    1. Purchase date / installation date
    2. Calibration frequency
    3. Alarm and shutdown criteria
    4. Installation location
    5. Type of detection equipment and its installation listing

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


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    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 of Industrial Machinery
    • Committee on Electrical Systems Maintenance
    • Committee on Health Care Facilities - Electrical Equipment
    • Committee on Health Care Facilities - Electrical Systems

    Anyone interested in serving can download the application form at NFPA's Web site.

    Speak Out
    Water Logged?
    The 2005 NEC added yet more requirments for electrical installations near water. Was it necessary to create a new article rather than put the requirements in Article 680? Visit EC&M's Web site to tell us.

    CodeWatch readers had a wide range of opinions as to what to do with 210.12 on AFCIs. Visit EC&M's Web site to read their responses.

    Shows and Events
    Grounding vs Bonding Seminar
    Grounding and bonding of electrical systems, sensitive electronic, and communications equipment is the most important and least understood activity in the electrical, data processing, and communications industry. At four two-day seminars, Code expert Mike Holt will explain the basics as well as the advance concepts necessary to understand the practical grounding and bonding rules in the NEC for systems not over 600V. Download the conference brochure for specific dates and locations.

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