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Fuel Cells: State of the Industry  by Bernadette Geyer The markets that are adopting fuel cells today will help enable economics of scale in manufacturing for future fuel cell products. Utility-interactive Static Power Inverters  by Kent Whitfield What do fuel cells, photovoltaics, and some wind turbines have in common? If they are supplying electricity to a facility and are also capable of supplying excess energy back to the local utility, it is likely they contain a utility-interactive static power inverter. Riding the Winds of Change  by Bill Colavecchi With a global compound annual growth rate of 32 percent over the past five years, wind power is the world's fastest growing energy source, and wind turbines are currently installed or being installed in more than thirty states nationwide.

Perspectives on PV: What Inspectors Need to Know     by John Wiles Most photovoltaic power systems are not operated or owned by any electric utility and therefore come under the requirements of the NEC. They must be inspected to ensure the safety of the owners, operators, service personnel, and the public. Go Tankless...and Stay In Hot Water by Thomas L. Harman This article specifically concentrates on the increasingly popular water heaters variously known as on-demand, instantaneous, or tankless water heaters. Further, only electric units are considered although gas-fired units are available. Metal Oxide Varistor Degradation by Kenneth Brown MOVs are variable resistors primarily consisting of zinc oxide (ZnO) with the function of limiting or diverting transient voltage surges. MOVs exhibit a relative high energy absorption capability which is important to the long term stability of the device.

Editorial: How Long Will the Inspector's Voice Be Heard?  by James Carpenter, CEO/Executive Director Many members realized the importance of belonging to an organization that has electrical safety as its main goal and have maintained their membership without questions about the necessity of the increase. Some have questioned the increase but stayed with IAEI because of the benefits and goals.  Canadian Code: Personal Safety and the CEC  by Leslie Stoch The Canadian Electrical Code provides safety standards for installation and maintenance of electrical equipment. Its object is to prevent electrical fire and shock hazards when we follow its rules. The CEC is not intended as a design standard, but only a set of least requirements to help us achieve safe electrical installations. Other Code: Conductor Ampacity   by David C. Young, PE The National Electrical Safety Code (NESC) only addresses conductor ampacity directly relative to grounding conductors. UL Question Corner (pdf) by Underwriters Laboratories The “UL Question Corner” answers questions of general interest that are sent in from authorized government inspectors and we believe will have interest for many inspectors.

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