By the time this issue hits your inbox, Engineers Week, celebrated around the world from February 17 to 23, will be less than a month away. Although I'm...More
Although electric motors consume more electricity than any other technology in industrial and commercial applications, today's energy-efficient and premium-efficiency...More
Growth in nonresidential construction and the shift to more efficient and more expensive lighting technologies will drive growth in demand for lamps at...More
Standby Power Stats at a Glance What do microwave ovens, garage door openers, and cable boxes have in common? They are just a few of the appliances found...More
Your magazine is very informative. I would like to comment on the article by Gerald Winstanley from NEMA, starting on page C34 of the November 2007 issue....More
An introduction to variable-frequency drives. Speed, torque, and horsepower are three inter-related parameters in motor control. The speed of a motor, measured in revolutions per minute (rpm), defines...More
Until recently, breakthroughs in renewable electric energy technology debuted in relative obscurity. With high up-front costs and rates of return spanning...More
Did you know that conduits on the rooftops of commercial buildings can run more than 70F hotter than surrounding temperatures? For example, depending...More
The candidates exude power, supporters are campaigning hard, the issues are framed as vital, and the outcome is ultimately uncertain. That's the 2008...More
A variety of green initiatives in the construction industry are helping to spotlight the importance of being good stewards of the environment. However,...More
Over the past two years, the seesaw that is the construction industry economy was kept level by a thriving non-residential sector. Industry analysis performed...More
With overall construction spending in the black and double-digit increases for non-residential construction in the last few years, electrical firms have...More
The National Electrical Code (NEC) requirements for arc fault circuit interrupters (AFCIs) have become more stringent with each passing Code cycle, stirring...More
Power is an essential component of any mission-critical facility, and data centers are no exception. Not only does the computer equipment need to be continuously...More
Driven by the desire for lower costs and earlier completion dates, many owners are abandoning the traditional design-bid-build project delivery method...More
Most people are comforted in knowing their homes are protected from electrical hazards by the circuit breakers located behind the door of a home's load...More
Last month, the U.S. Department of Energy (DOE) published a final rule establishing new energy-efficiency standards for distribution transformers. The...More
Many of today's homeowners are enthusiastic about energy-saving products, especially those that boast a quick payback. Vacancy and occupancy sensors are...More
The programmable logic controller (PLC) is a microprocessor-based system that accepts input data from switches and sensors, processes that data by making...More
Many years ago, when I worked for an electric utility, I found myself in the position of tracking changes to the National Electrical Safety Code (NESC)...More
Focusing on the complex interplay among mechanical and electrical systems needed to support critical infrastructure, Art. 708 is one of four new Articles...More
When it comes to fire pumps, there's more to designing and installing these units than meets the eye. As projects become larger and more complex, such...More
The cost of high-technology lighting is widely acknowledged as a barrier to the greater use of advanced sources in retail and other commercial lighting...More
LEDs have unique and compelling characteristics that make them ideal for industrial lighting applications. But there are a variety of misconceptions about LEDs, how well they work, how long they last, and more. Digital Lumens developed this whitepaper to dish up the facts around LEDs and address some common misunderstandings....More
An arc flash is associated with the explosive release of energy caused by an electrical arc, due to either a phase-to-ground or a phase-to-phase fault. This kind of fault can result from many factors – a dropped tool, accidental contact with electrical systems, buildup of conductive dust, corrosion or improper work conditions.....More
Abstract: In this webinar, Mike will not only explain the current NEC requirements for GFCIs and AFCIs, but he'll explain how they operate, what causes their premature failure, and when they won't provide the safety protection you might have thought they would.
Abstract: This webinar will teach attendees the difference between risk and hazard, and how the choice of system grounding has a direct impact on reliability and safety.
