The use of fine stranded, flexible cables appears to be increasing each year. This is particularly true with relatively “young” industries like the photovoltaic (PV) industry, the fuel cell industry, and the uninterruptible power supply (UPS) industries. In many cases, technicians and installers in these fields prefer to use fine-stranded flexible cables in the larger [...]
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In today’s world there are so many different types of receptacles to choose from—straight blade, locking-type, and pin and sleeve. The variety of straight blade receptacles offered by manufacturers alone is staggering—in fact, wiring device manufacturers produce and market more than a 1,000 different types. Differences include electrical rating, color, style, sizes, and configuration. Receptacles [...]
(4 votes, average: 4.50 out of 5)
Well, another three years has passed and with it another revision cycle of the NEC has been completed. As so often happens during code cycles, several significant changes occurred during the 2005 NEC code cycle. One of the more significant changes is the new requirement for industrial machinery electrical panels, industrial control panels, certain HVAC [...]
(No Ratings Yet)Labor Day will be here again before you know it—the day when we officially recognize the contributions that workers have made to this country. But this Labor Day, why not also consider how hard your money is working for you? You may be surprised by what you find. Don’t Overload on “Lazy” Investments As you [...]
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Electrical inspectors as well as building inspectors have important roles in assuring safety for persons and property. It is essential for safety that jurisdictions establish and maintain an effective code enforcement program. Inspections of installed work provide an opportunity for potential shock hazards, electrocution, fire and other hazards to be identified and corrected before the [...]
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This article provides an overview of the information contained in the new Analysis of Changes, 2005 NEC regarding a few of the more significant changes to the requirements for fire pump installations in Article 695. The revisions to the 2002 NEC rules include changes to the overcurrent protection requirements, overcurrent device selection, disconnecting means locations, [...]
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In Part 2 of this series in the September/October issue, I worked through two simple example voltage-drop calculations. In both examples, I calculated what voltage I would have to have at the house to insure the voltage of 120 V at the chicken coop. Let’s call this calculation method A. The reason I used method [...]
(No Ratings Yet)Question: Motor-operated door systems Other than the typical fire and shock hazards, are there other safety concerns with motor-operated door systems that are commonly used for security in stores such as on pharmacy service counters?
(No Ratings Yet)A title page note says: “The Canadian Electrical Code, Part I is a voluntary code for adoption and enforcement by regulatory authorities.” Regulatory authorities—you know who they are—the electrical inspection authorities in all of Canada’s provinces and territories. On its own, the code has no basis in law. It only becomes the law when adopted [...]
(No Ratings Yet)After making the rounds to all six section meetings with International President Lanny McMahill and four meetings with Vice President of International Affairs Doug Geralde, we learned once again that even though things are different many things are the same. The uniqueness of each section was evident but as we met with leaders and members [...]
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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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