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...
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...
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....
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...
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....
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...
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...
Power Quality Considerations for Security Systems
Feb 1, 2008, By Jay Adams, Transtector, A Smiths Business
Reliable operation of security systems is obviously essential to protect company assets and ensure human safety. However, episodic equipment malfunctions...
Seeing Green
Feb 1, 2008, By Beck Ireland, Staff Writer
Although concern for the environment and awareness of green technologies are at an all-time high, results from an online survey of 1,000 respondents conducted...
The Art and Science of Color Coding
Feb 1, 2008, By David Herres, Master Electrician
On any given project, choosing the appropriate colors for conductors during installation facilitates maintenance and enhances troubleshooting efforts...
Optimizing Energy Conservation in Today's Plants
Feb 1, 2008, By Dave Bovankovich, E-Mon, LLC
With the industrial sector consuming more than one-third of all the energy used in the United States, it's easy to see why facility managers are constantly...
Transformer Secondary Conductors
Feb 1, 2008, By Mike Holt, NEC Consultant
Similar to feeder taps, covered in the last issue, transformer secondary conductors can be every bit as confusing. Let's take a closer look at 240.21(C)...
AFCI Article Sparks Reader Debate
Jan 1, 2008,
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....
Once an Engineer, Always an Engineer
Jan 1, 2008, By Michael Eby, Editor-in-Chief
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...
Free Guides to Ampacity Adjustments for Wire and Cable Derating
Jan 1, 2008,
Did you know that conduits on the rooftops of commercial buildings can run more than 70F hotter than surrounding temperatures? For example, depending...
