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May-June 2001
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May-June 2001 CoverMay-June 2001


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Emergency Electrical Systems Installations and Inspections

by Michael Johnston

The installation and inspection of an emergency electrical system are critical elements regarding the protection of persons set forth in Section 90-1 of the National Electrical Code. Requirements for the emergency electrical circuits and emergency system are more restrictive than the rules for normal circuits and systems in chapters 1 through 4 of the Code. It is important that those involved with the design, installation and inspection of the emergency system know and understand their responsibility in meeting the minimum requirements in the applicable codes. This article will take a closer look at a few of the key concepts and requirements that must be considered and verified regarding emergency electrical wiring and systems. Read more

Electricity Kills

by Walter Bost

The recent tragic and unnecessary death of yet another one of our children at play can not be acceptable to any concerned person, local elected official, or Florida legislator. Touching a light pole should not cause anyone’s death. We have witnessed too many deaths due apparently to faulty electrical work. Read more

Test Your Ground Fault Circuit Interrupter


Most homes built since the 1970s have a GFCI in their kitchen and bathrooms. GFCIs appear similar to standard electrical receptacles, but also have "test” and "reset” buttons. Read more

If I were a Manufactured Home, what Code Would I Use?

by Robert McCullough

If you answered the National Electrical Code, you would be partially correct. Manufactured housing has its own set of construction standards that are found in 24 CFR Part 3280. This came into being in response to the National Manufactured Construction and Safety Standards Act of 1974 (42 U.S.C. 5403). These original rules were, for the most part, transcribed from the 1977 edition of NFPA 501B, Standard for Mobile Homes. Read more

Integrating NFPA Electrical Codes and Standards

by Michael Callanan

Recently the National Fire Protection Association announced that their board of directors had taken a historic step in voting unanimously to pursue the development of NFPA 5000, NFPA Building Code. What makes this standard different from other building codes is that NFPA 5000 will be the first building code to be developed using the ANSI open consensus process. In making their decision, the board of directors reasoned that this code would round out and complete the NFPA set of codes. Read more

NEIS: Enforcement Tools for Code Officials

by Brooke Stauffer

Since 1997, the National Electrical Contractors Association (NECA) has been publishing a series of National Electrical Installation Standards™. There are currently eleven NEIS™ in print (see sidebar). Other documents in progress include installation standards on panelboards, busways, transformers, motors, wiring devices, hazardous (classified) locations, industrial heat tracing, telecommunications, and temporary power systems for construction sites. NECA plans to publish five new standards each year. Read more

The NEC and Installations Over 600 Volts

by Chuck Mello

The March/April issue of the IAEI News had an article on high voltage Equipment that discussed the new areas of application. The article discussed how these systems have evolved into some non-traditional areas along with some of the safety concerns for those working around this equipment. Codes and standards were discussed in general along with some issues that come about when over 600-volt equipment is installed. This article will focus on some of the National Electrical Code requirements and common problems being experienced in the field today. Read more



Promoting Electrical Safety: The Role of the Electrical Inspector

by Philip Cox

The month of May is designated as Electrical Safety Month. Stress is placed on promoting safe electrical practices and educating the public on how to properly use electricity. Our lives are significantly affected by the availability and use of electricity and the quality of life has been made so much better for us because of that form of energy. It has not been many decades ago that most people cooked on wood or coal stoves, used kerosene lamps for lighting, washed their clothing by hand, had no air conditioning, had no television sets, and did not have computers. Read more

Canadian Code

Rule 8-104 Maximum Equipment Loading

by Leslie Stoch

Rule 8-104 of the Canadian Electrical Code prescribes maximum permissible operating loads for electrical equipment, and maximum loads that may be carried by service, feeder and branch circuit wiring. This article looks into the requirements and limitations this rule imposes on the application of electrical equipment and wiring. Read more

UL Question Corner

Prefabricated Buildings are Categorized and Given One Classification Mark

by Underwriters Laboratories

Occasionally the word "recommended” appears in manufacturers’ installation instructions. For example, "it is recommended that this product be used on a separate branch circuit.” Does the installer need to follow manufacturers’ "recommendations” to comply with Section 110-3(b) of the National Electrical Code (NEC)? Read more

Other Code

Who Really Knows What It Means?

by David Young

I have been working with and searching all aspects of the National Electrical Safety Code (NESC®) for almost 30 years. I refer to the book at least twice a day. Engineering, construction, claims and legal personnel in my company call or e-mail me regularly to ask questions about the NESC. Five years ago, I thought I had a very good understanding of the NESC. Read more

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