For some time, the proper control of emergency lighting circuits has been a topic of debate for manufacturers, systems integrators, and specifying electrical engineers. Much of the debate has centered on the proper application of the many codes and standards that apply to emergency lighting.
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We are finally getting into the body of the code with Article 110, which covers the basic requirements for electrical installations and applies throughout the code, unless specifically overruled in any article in chapters 5 through 8. Some of the items covered in this article are the requirements for examination, installation and use, terminations, and access to and spaces about electrical equipment. Over the years I’ve often had inspectors and electricians ask me where in the code it states some basic rule, and more often than not it is a requirement in Article 110.
(1 votes, average: 5.00 out of 5)
A little bit of history is in order before we get into AC and DC circuit theory. In the latter part of the 19th century there were three principal players in the electrical generation and transmission industry. Thomas Edison, known as the “Wizard of Menlo Park” and most famous for his invention of the electric light bulb, was the main proponent of direct current (DC) transmission. George Westinghouse and Nikola Tesla were the main proponents of alternating current (AC) transmission. History documents this formative period in the development of electrical generation and transmission as the “War of Currents.”
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CSA Standard C22.6 No. 1-11, Electrical Inspection Code for Existing Residential Occupancies, is a new Canadian standard developed to establish a minimum level of safety in existing residential occupancies and was published in February 2011.
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Anyone working with PV systems and equipment in either manufacturing, design, installation, or inspection arenas should get a copy of the 2011 NEC and the 2011 NEC Handbook.
(3 votes, average: 4.33 out of 5)
The use of electricity has inherent risks, particularly electric shock and arc flash hazard. However management tools and technology are readily available to mitigate and manage these risks.
(No Ratings Yet)Flying by the seat of your pants when it comes to safety is not a good idea. A good safety plan can add value to your inspection program.
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This article reviews two very essential safety requirements of the Canadian Electrical Code for motor control circuits, grounding and why it’s so significant that control circuits be prohibited for use as motor disconnecting means.
(1 votes, average: 4.00 out of 5)Inspectors, contractors and electrical engineers have used IEEE Color Books for decades to find practical solutions to questions on the design, installation, maintenance, and operation of industrial, commercial, and institutional electrical power systems.
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Let’s say, you are undertaking design and installation or inspection of such electrical installation in patient care areas of a health care facility. Do you consider certain parts of patient care areas as wet locations, and which criteria do you use for such consideration? In light of these questions — which wiring methods should be used, and which types of equipment construction should be specified in design? Is use of a solidly grounded system allowed in patient care areas or must only isolated systems be used?
(1 votes, average: 5.00 out of 5)
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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