Perspectives
on PV: Achieving The Art of The Possible 
by John Wiles
Here are some of the steps that the PV systems vendor/designer/installer must accomplish to achieve a safe, durable, reliable, and cost-effective system.
Article 675—Electrical Driven or Controlled Irrigation Machines
by Robert McCullough
Irrigation machines? Most of you will labor your entire electrical careers without ever having seen one of these, let alone inspect or wire one. However, knowing the history of these machines can help you better understand the history of the Code.
Buyers Beware: Electrical Instrumentation for Use in Hazardous Locations
by Bob Baker
Buyers of salvaged, remanufactured, refurbished or new surplus electrical instrumentation for use in hazardous locations need to exercise caution in their instrumentation purchases.
Choosing the Right Interconnect Solution for Your Application
by Paul Carter
The world is linked by satellite, Internet, fiber optic cables, and high-tech communication cords. Many of the devices that keep us connected rely on advanced interconnectivity solutions—connections designed to ensure that cable products deliver the most reliable and consistent data and power transfer.
VFDs for Energy Savings in Hospitals—what they are, how they work, and how they save money
by Mike Olson
The goal when establishing a grounding electrode or grounding electrode system for a building or structure should be to strive for the best possible connection to the earth. Concrete-encased electrodes have a proven record of providing this.
Should Changes at "The Fed" Affect How You Invest?
by Jesse Abercrombie
It's been a long time since someone other than Alan Greenspan has served as chairman of the Federal Reserve Board of Governors. With Ben Bernanke taking the helm at the Fed, how will you be affected by the emergence of a new Fed chairman. |