Product News
May 1, 2008,
3-phase UPS SmartOnline modular UPS systems are designed for 120/208V applications. According to the company, three models are available with individual...
Editorial Correction
May 1, 2008,
A reader recently wrote in with a question about the April 2008 issue Code Quandaries department, pointing out a possible error in the calculations for...
The Case of the Shocking Sealing Machine
May 1, 2008, By Andrew Paris, P.E., Anderson Engineering
When a graphics production company found itself busting at the seams, it planned to move to a larger facility that offered more space to produce its signature...
NFPA 70E: Revising the Standard
May 1, 2008, By Beck Ireland, Staff Writer
With 568 proposals and 817 comments, the latest revision cycle for the NFPA 70E, Standard for Electrical Safety in the Workplace, published by Quincy,...
DOE Expands CFL Program
Apr 1, 2008,
The U.S. Department of Energy (DOE), Washington, D.C, has expanded the categories of compact fluorescent lamps (CLFs) under the Energy Star label. CFL...
Beyond Web Sites
Apr 1, 2008, By Beck Ireland, Staff Writer
For more than four years, Phoenix-based Watt Masters, formerly Buehler Brothers Electric, a third-generation, family-owned electrical service business...
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...
Calculating Single- and 3-Phase Parameters
Apr 1, 2008,
Welcome to the first in a series of articles focusing on electrical calculation basics. This month, we'll discuss the most fundamental of calculations...
Northeast Serves as Bright Spot in U.S. Industrial Project Outlook
Apr 1, 2008,
If you watch the evening news, listen to the daily headlines on the radio, or surf the Web for top stories, it's easy to get bogged down by the constant...
Illustrated Catastrophes
Apr 1, 2008, By Joe Tedesco, NEC Columnist
As usual, never consider the following commentary associated with these photos as a formal interpretation of the National Electrical Code (NEC). Without...
Product News
Apr 1, 2008,
Power quality analyzer The PA9Wireless power quality analyzer is designed for remote recording of electrical signals on low-voltage power lines. Because...
Focus on LEDs
Apr 1, 2008,
Lighting system The TL201LED low-power LED lighting system consumes less than 15% of the power of conventional-watt low-voltage xenon lamps and has a...
The Fight is On
Apr 1, 2008, By Michael Eby, Editor-in-Chief
There's no doubt solid-state lighting (SSL) technology has progressed rapidly in recent years. Most every small research group and high-tech firm focused...
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...
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...
Asbestos: Don't Let Your Past Come Back to Haunt You
Apr 1, 2008,
Asbestos is the generic name given to a group of naturally occurring, fibrous minerals with high tensile strength, flexibility, and resistance to heat,...
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...
Code Quandaries
Apr 1, 2008, By Mike Holt, NEC Consultant
Q. What size THHN conductor is required for a 320A 3-phase feeder load for commercial office buildings?...
Picture This
Apr 1, 2008,
What it's not: Bean sprouts What it is: Zinc whiskers. These small particles of zinc are typically less than a few millimeters long and a few thousandths...
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...
Article 424: Fixed Electric Space Heating
Apr 1, 2008, By Mike Holt, NEC Consultant
Considering the fact that it has nine parts, at first glance, Art. 424 might seem like overkill for a device as simple as a heater. Walk into any hardware...
Product News
Apr 1, 2008,
Daylighting unit An improvement to SunTrackerOne, SunTrackerTwo extends the average time electric lights can be turned off during the day from 9.2 hr...
