Based on this series of articles and presentations that I make to groups of inspectors around the country, I get several calls and e-mails a week and sometimes several calls a day from inspectors looking at PV plans or inspecting PV systems. The questions that they pose are always challenging because most of the inspectors [...]
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The traditional distinction between MC and AC cable applications is changing because of a new interlocked armor ground Type MC cable. In the last few years, contractors have been using Type MC cable for branch circuits because of the installed-cost savings MC delivers. Now, a new form of Type MC —MCAP™ cable — promises to [...]
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In the July/August issue, we provided a glimpse of some of the more significant changes proposed and accepted for NEC-2008. This article is a continuation of that review. Once again, it is important to stress that this is a look at what was proposed and acted on by the code-making panels through the proposals stages [...]
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Hazard-based product safety standards are now under development, and this hazard-based approach is likely soon to affect other product/equipment safety standards as well as installation codes. What is this hazard-based approach? How could it impact safety standards for equipment and installations? Are there relevant applications in electrical safety and practical examples for electric shock and [...]
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When the city of Detroit hosted the biggest sporting event of the year, Super Bowl XL, the Buildings & Safety Engineering Department (B&SED) played a vital role in its safe operation. Super Bowl XL was the catalyst for a major downtown revitalization and the grand finale of several major events for which our department had [...]
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Electromagnetic compatibility (EMC) is the ability of electrical / electronic equipment to operate in its installation environment while neither causing nor experiencing electromagnetic interference (EMI). EMI is any interference with normal equipment operation caused by abnormal energy entering the equipment either by conduction though wiring connections or by radiated wave reception. Radiated EMI is also [...]
(No Ratings Yet)If you’re an investor, especially a business owner in the higher tax brackets, you’ll want to pay close attention to some of the provisions of a bill that President Bush signed into law on May 17. The new legislation extends the lower tax rates on capital gains and stock dividends, temporarily removes restrictions on transfers [...]
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In September 2005, the California Public Utilities Commission (CPUC) announced “the most ambitious energy and efficiency campaign in the history of the utility industry in the U.S.,” when introducing a three-year, $2 billion funding plan for energy efficiency programs. This campaign is designed to help energy customers utilize the large number of energy efficiency programs [...]
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This article is a continuation of what I see as significant changes that are coming in the 2007 revision of the National Electrical Safety Code. Grades of Construction Table 242-1 has been changed by the removal of the delineations rural and urban. The higher grades of construction that used to apply to urban areas, now [...]
(No Ratings Yet)Rules 10-1100 to 10-1108 of the Canadian Electrical Code provide rules on installing neutral grounding devices (grounding resistors) used for the purpose of controlling the ground fault current or the voltage-to-ground of an alternating current electrical system. These rules have undergone some significant changes in the 2006 edition of the code.
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IAEI, as the keystone of the electrical industry, is a membership driven, non-profit association promoting electrical safety throughout the industry by providing premier education, certification of inspectors, advocacy, partnerships and expert leadership in Electrical Codes and Standards development.
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