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Ways to Reduce Arc Flash EnergyMay 1, 2008 12:00 PM, By Bob Fuhr, P.E., PowerStudies.com Reducing personal injuries from arc flash events should be the main goal of any arc flash hazard assessment. Many facilities have locations where the... |
Ways to Reduce Arc Flash Energy
May 1, 2008, By Bob Fuhr, P.E., PowerStudies.com
Reducing personal injuries from arc flash events should be the main goal of any arc flash hazard assessment. Many facilities have locations where the...
Standards Deviant
Apr 1, 2008, By Beck Ireland, Staff Writer
All lighting products sold in the United States are subject to industry standards governing safety and performance. Because testing and rating systems...
Understanding Harmonic Indices
Apr 1, 2008, By John DeDad, Senior Director; Editorial and EC&M Development
The power quality industry has developed certain index values that help us assess the quality of service as it relates to distortion caused by the presence...
New Study Evaluates Residential Photovoltaic Metering and Interconnection Issues at Utilities
Apr 1, 2008,
There's no question the solar industry has reached a crossroads entering the beginning of a potentially phenomenal growth spurt that will continue for...
The New Generation of Fiber-Optic Cables
Apr 1, 2008, By Trevor Smith, ADC, and Larry Johnson, The Light Brigade
Fiber that bends around pencils and sharp corners without a significant increase in attenuation has captured the collective imaginations of fiber pundits...
Switching Sides
Apr 1, 2008, By David Moye, Moye Electric Co.
Just as an NFL cornerback would face tribulation from teammates for playing wide receiver, an engineer turned contractor knows he must run the gauntlet...
Business Opportunities in the Commercial Lighting Arena
Apr 1, 2008, By Marc Hoffman and Ed Winsniewski, Consortium for Energy Efficiency
There's no doubt the growing demand for energy efficiency is and will continue to be a source of new business for electrical contractors. Efficiency makes...
Top 10 Steps to Schedule Management
Mar 1, 2008, David Brown ,, D. Brown Management
What if someone told you that you could save thousands of dollars on your next project before you even break ground? Would you believe such a grand statement?...
Protecting Critical Loads with Commodity UPSs
Mar 1, 2008, John DeDad ,, Senior Director, Editorial and EC&M Development
The need for small commodity UPS systems has grown significantly in recent years because of the increase in telecommuting, home offices, and distributed...
Underground Project Colors a City's Downtown
Mar 1, 2008, Stefanie Kure, Senior Associate Editor
Below the busy streets of downtown Oklahoma City sprawls a vast network of tunnels and bridges that links 16 blocks and more than 30 of the area's buildings....
Grounding and Bonding of Separately Derived Systems
Mar 1, 2008, Mike Holt, NEC Consultant
Separately derived systems (SDSs) include most transformers as well as any generator or UPS supplying a transfer switch that opens the neutral conductor....
Shrinking Domestic Budget Limits Construction Funding
Mar 1, 2008,
President Bush recently released a $3.1 trillion budget for fiscal year 2009 that plans to shrink domestic spending and proposes a 2.9% drop in infrastructure...
Maximum Capacity
Mar 1, 2008, Beck Ireland, Staff Writer
Much like the old adage about the month in which this article appears, 2007 came roaring in like a lion for the majority of firms in EC&M's list of Top...
Enlighten Your Customers
Mar 1, 2008, Audwin Cash ,, Lutron Electronics Co., Inc.
Although the kaleidoscope of green options available to those who design and build commercial buildings can be confusing, one fact is clear: Going green...
Motor Selection for Adjustable-Speed Drives
Feb 1, 2008, By Alexander Kusko, Sc.D., P.E., Exponent Failure Analysis Associates, and Jean Y. Ayoub, M.S.E.E.,
Prior to the advent of the adjustable-speed drive (ASD), the polyphase induction motor operated as a constant-speed motor. Figure 1 shows the well-known...
