Part I, which appeared in the March/April issue, provided readers with information about basic operation and basic time-current characteristics of branch-circuit, low-voltage fuses and circuit breakers. This article covers three overcurrent protective device ratings, their application in design, and NEC compliance aspects of low-voltage branch-circuit fuses and circuit breakers. These overcurrent protective devices (OCPDs) are [...]
(No Ratings Yet)What does the term electrical safety really mean? Stop reading for a moment and think about what electrical safety means to you. The hazards are electrical shock, arc-flash and arc-blast. Electrical safety is achieved by taking all of the necessary steps to provide our homes with safe electrical systems and by ensuring that everyone goes [...]
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When deciding what type of connector material works best in an electrical application, specifiers and inspectors alike may instinctively assume copper is the best choice. And indeed, it may be. But there are some applications for which aluminum poses a cost-effective, easier and longer lasting alternative. In order to ensure that electrical connections are proper, [...]
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Electrical arc-flash and shock hazards have been recognized as particularly dangerous and fairly frequent occurrences that put the lives and health of electrical workers at significant risk. Statistics indicate that five to ten arc-flash accidents that involve a fatality or serious injury to an employee occur every day in the United States. Those incidents most [...]
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Behind the scenes, a lot of mechanical engineering goes into creating and maintaining a tropical rainforest near Lake Erie, just 40 miles from the Canadian border. It is a feat accomplished by Cleveland (Ohio) Metroparks, a recreational authority that provides an “emerald necklace” of woodlands, golf courses, hiking trails and other attractions surrounding this Midwestern [...]
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May is electrical safety month, during which the electrical industry draws attention to all aspects of electrical safety for persons and property. Section 90.1(A) of the NEC provides the essence and basis for this concept that is integral to the rules in the Code. These rules are all built on a foundation and premise related [...]
(1 votes, average: 5.00 out of 5)Deregulation of electric utilities is sweeping the country and is now available almost everywhere. The theory is that competition in the purchase of electric power would result in cheaper electricity and make utilities more responsive to consumers. This may be good in some areas and bad in others but it does put certain new elements [...]
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The requirements and necessity for, and the location of disconnects in a photovoltaic (PV) power system are always of great interest. While PV equipment manufacturers, designers, installers, and electrical inspectors are all interested in getting safe PV systems, there are usually some “friendly” discussions on the whys and hows of disconnects needed to achieve those [...]
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To protect your and your company’s wallets, it is very important to understand the rates for which you are being charged for electricity. To get your feet wet, I am going to share with you and discuss in detail the electric rates of a typical utility. The example I am using is a utility that [...]
(No Ratings Yet)For two and half years in IAEI News, Jesse Abercrombie has been addressing financial issues of concern to those in the electrical industry. For this issue, he has submitted a guest article by Attorney Jay Crutcher, who will discuss a new tax in Texas. It is not yet known whether other states are implementing similar [...]
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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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