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Understanding Fire Pump Controller ApplicationsMar 24, 2009 4:03 PM, By Warren Shill, Underwriters Laboratories Fire pump controllers are control panels containing electrical components, such as circuit breaker, switches, relays, and other devices, dedicated to the operation of fire pumps.... |
How to Keep Variable-Frequency Drives and Motors Running
Feb 1, 2009, By Dan Orchard, Intigral, Inc.
When applied to blowers and pumps, variable-frequency drives (VFDs) offer energy savings. In mechanical applications, they allow fine adjustments that...
Training & Continuing Education Trends in the Electrical Industry
Feb 1, 2009, By Beck Ireland, Staff Writer
Despite the slowdown in construction caused by the U.S. economic recession, Jackson, Mich.-based engineering, consulting, and construction management...
Basic Training
Jan 1, 2009, By Michael Eby, Editor-in-Chief
You would think one of the most basic concepts of an electrical system would be the most widely understood. But after years of working in the electrical...
Troubleshooting Residential Submersible Pump Systems
Dec 1, 2008, By David Herres, Master Electrician
Why is it that residential deep well submersible pump system malfunctions are notoriously hard to diagnose? For one, a pump/motor assembly suspended 10...
Partnering for Success
Oct 1, 2008, By Amy Florence Fischbach, Contributing Writer
Twenty-seven-year-old Tyler Squire could crunch mathematical problems in the blink of an eye. When it came to applying his skills to the real world, however,...
Learning to Read Waveform Signatures
Sep 1, 2008, By Mark McGranaghan, EPRI Solutions
Today, many facilities have online monitoring systems that continuously track power quality, provide valuable information about energy use, and characterize...
From the Forensic Files of NIOSH
Aug 1, 2008,
Few would argue that electrocution is a serious threat to electrical workers. However, it's only one of the dangers faced by this group of individuals, as evidenced by a tragedy that occurred at a Michigan vehicle transmission plant....
Low-Voltage Lighting Primer
Jun 1, 2008,
The use of low-voltage lighting systems has become increasingly popular over the past several years. In fact, low-voltage halogen and xenon lighting systems...
The Soft Sell
May 1, 2008, By Beck Ireland, Staff Writer
Early in his career, Jamie Wilkie, owner of Mister Sparky of Greenville, S.C., learned a valuable lesson. Eight years ago, Wilkie already a licensed master...
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,...
Crest Factor: A Key Troubleshooting Parameter
Mar 1, 2008, John DeDad ,, Senior Director, Editorial and EC&M Development
We all know that electric utilities in the United States generate electricity at various 60-Hz voltage levels that result in a sine wave waveform. The...
Utilities Join Forces to Offer Unified Electric Line Specialist Training
Feb 1, 2008,
When it comes to training, Midwest ENERGY Association (MEA), Eagan, Minn., believes in the old saying two heads are better than one try 14 heads to be...
Disposable FR Garments: What Are the Differences?
Jan 1, 2008, By Hugh Hoagland, ArcWear.com
Any petrochemical worker or electrician exposed to electric arc has something in common with a meth lab cleanup team. When they arrive on the job site,...
Speed Control of Motors
Jan 1, 2008, By Steve Vidal, P.E., Joseph J. Vidal & Sons, Inc.
Speed, torque, and horsepower are three inter-related parameters in motor control. The speed of a motor, measured in revolutions per minute (rpm), defines...
Don't Get Burned by Not Following Protocol
Jan 1, 2008,
Proper training is an important part of any occupation, but it's especially critical to workers in the electrical profession. A journeyman electrician...
The 3 As of Arc Flash - Awareness, Analysis, Action 
