Electrical systems are grounded to limit the voltage imposed by lightning, line surges, or unintentional contact with higher voltage lines and to stabilize the voltage to earth during normal operation. Electrical systems can be grounded in several ways. There are induction grounded systems, resistance grounded systems, and high impedance grounded systems among others. The most [...]
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You start your day with your first inspection and upon entering the site the owner indicates, reluctantly, that there is some equipment that is not certified and that the facility needs to be up and running by tomorrow morning. It’s a simple machine with a few motors and a small industrial control panel. The system [...]
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Provisions in the National Electrical Code covering dedicated space about electrical equipment have experienced a significant degree of modification through the last three Code cycles. In addition, rules covering that space have been relocated from Article 384 to Article 110. The relocation occurred during the 1999 Code cycle and previously identified Section 384-4 was re-identified [...]
(No Ratings Yet)Canada’s 10 provinces and three territories are the legislated regulatory authorities for electrical safety in Canada. Under the Canadian Constitution there is a division of powers between the federal and provincial/territorial governments. The federal government has jurisdiction over areas such as defense and communications while the provinces and territories have jurisdictional authority over others such [...]
(No Ratings Yet)There are hundreds of customers in my company’s service area who own their own high voltage transmission, distribution and/or substation electric supply facilities. The service voltages for these customers range from 4 kV to 138 kV. Many years ago, I investigated an accident involving the death of a farmer on one such facility. The farmer [...]
(No Ratings Yet)Electrical inspectors demonstrate support of electrical manufacturers and feel they are an integral part of the team dedicated to providing an environment in which consumers can safely use electrical energy. In keeping with that objective, many of these manufacturers have traditionally been and continue to be an important part of the International Association of Electrical [...]
(No Ratings Yet)The International Association of Electrical Inspectors is fortunate to have some outstanding leaders and workers within its membership. Many work quietly and are hardly noticed, even by fellow members within their own chapter. Occasionally, a letter is received by the International Office from a member who feels that the IAEI is not providing enough services [...]
(No Ratings Yet)The Canadian Electrical Code Part I gives electrical utilities an exemption from the code for “installations and equipment in its exercise as a utility, located outdoors or in buildings or sections of buildings used for that purpose.” The CEC Part I is “a voluntary code for adoption and enforcement by regulatory authorities.” When adopted into [...]
(No Ratings Yet)Question: Alternate energy With the soaring cost of energy and deregulation of the U.S. electrical power grid, alternate sources of power generation such as photovoltaic and fuel cell technology is on the increase. Does UL List this type of equipment?
(No Ratings Yet)Question: Sealing compounds Are there sealing compounds such as expanding foam, that have been Listed as a means to keep moisture or condensation from entering equipment through service conduit or the condensation between a refrigeration unit and the outside?
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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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