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How mistakes are made NFPA Journal Share     Many installers and code enforcers seem to misinterpret the interaction between the 2010 edition of NFPA 72®, National Fire Alarm and Signaling Code®, and other codes, such as the 2008 edition of NFPA 70®, National Electrical Code® (NEC®), and the 2009 edition of NFPA 101®, Life Safety Code®, as well as the adopted building and fire codes. Code officials often say that a building owner must provide and install a fire alarm system in accordance with "the code," which many installers assume refers only to NFPA 72. They overlook the fact that they must also consider several other codes to satisfy this requirement. More
Money tight? IAEI Share
Did you know that IAEI continues to work on your behalf to devise ways to save you money? Right on the home page of www.iaei.org, there is a link to "Exciting New Member Benefits" that opens up a whole world of money savings opportunities right at our fingertips. More Open for business: NEC on signs and lighting systems Electrical Contractor Magazine Share
An electrical contractor recently asked the author about a municipality that inspected electrical signs and outline lighting systems at in-house manufacturing facilities. His question regarded the Underwriters Laboratories (UL) listing requirement of those signs and outline lighting systems and if the city could approve them by their electrical ordinance and place compliance stickers on the enclosures. What's the difference between an "approved," "listed" and "labeled" sign system? Let's cite the differences between the two procedures used by cities that inspect and approve electrical signs and outline lighting systems. More
U.K. cable industry takes a stand against rogue traders Electrical Products & Applications Share
The U.K. cabling supply industry gathered in London last week for the launch of the Approved Cables Initiative (ACI). This is a proactive and coordinated plan that will investigate and address the issues of unsafe, non-approved and counterfeit cables in the U.K. marketplace and to educate the supply chain on the dangers. The electrical media, trade organizations, legislators and members of parliament gathered to hear Michael Simms, director energy and telecom cables at Prysmian Cables & Systems, and president of the British Cables Association (BCA), introduce the initiative, which he described as being "the most important campaign undertaken by the electrical supply industry in the past 20 years." More The case of the deadly arc flash EC&M Share
For one electrician, the day began with a routine service call to troubleshoot electrical problems at a major department store in town. It ended with one person injured, two people dead, significant property damage to the facility, and serious lessons for anyone who works on electrical systems. This article illustrates how defective test equipment coupled with lack of training led to tragedy for electrical workers at the shopping mall. More
Supply-side PV utility connections IAEI Magazine Share
Many larger PV systems cannot meet the requirements for a load-side (of the service disconnect) connection to the premises wiring system and a supply-side connection must be considered. The supply-side connection (also known as a service-entrance tap) is allowed by the National Electrical Code (NEC) and is addressed in a number of sections in the Code. Section 690.64(A) {moving to 705.12(A) in the 2008-2011 NEC} allows a supply (utility) side connection as permitted in 230.82(6). Section 230.82(6) indicates that solar photovoltaic equipment is permitted to be connected to the supply side of the service disconnect. More Solar industry learns lessons in Spanish sun The New York Times Share
Armed with generous incentives from the Spanish government to jump-start a national solar energy industry, the city of Puertollano set out to replace its failing coal economy by attracting solar companies, with a campaign slogan: "The Sun Moves Us." Soon, Puertollano had two enormous solar power plants, factories making solar panels and silicon wafers, and clean energy research institutes. Half the solar power installed globally in 2008 was installed in Spain. But as low-quality, poorly designed solar plants sprang up on Spain's plateaus, Spanish officials came to realize that they would have to subsidize many of them indefinitely, and that the industry they had created might never produce efficient green energy on its own. More
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