You're the information technologies communications manager for a process licensing company-responsible for the operation of thousands of workstations...More
Electrical contractors-both big and small-are hopping onto the Internet channel to make their businesses better. A few are even ordering supplies from...More
When metal halide technology was introduced in 1964, it quickly leaped over the mercury lamp technology it was designed to replace. Metal halide lamps...More
Generally, I'm not a fan of on-the-job (OJT) training for technical work. It's great (even necessary) as a supplement to other training, but it's usually...More
The path of lighting products continues to wend toward slimmer fluorescent lamps, refined electronic ballasts, and improved metal-halide lamps. Over the...More
Fifty years ago electrical contracting was a straightforward field. Contractors strode confidently from job to job installing electrical power systems...More
There are so many acronyms for telephone services and links between data communications and telecommunications that it's hard to keep track of what's...More
Online shopping offers convenience and saves money for both the purchaser and the merchant, yet many people hesitate to take advantage of it. When something...More
Most merchandise-whether it's old refrigerators, desks, bicycles, automobiles, hand tools, or circuit breakers-officially becomes antiquated after 50...More
The U.S. economy has down-shifted, but it is moving ahead nicely. Nonfarm jobs increased by 2.2 million in 1998; 300,000 of those jobs were added after...More
Many (or even most) of the "Communications Contractor" minivans you see driving around town actually belong to old-fashioned electrical contractors. In...More
When you walk into the counter area of your favorite electrical supply house five years from now, it may be a very different experience from what you...More
The climbing cost of electric powerconcerns all facilities today. This article offers some suggestions on where to look for opportunities to reduce unnecessary...More
The argument in favor of preventive maintenance programs is elementary. Scheduled outages are almost always less expensive than unscheduled outages, and...More
In part 1, we discussed the importance of data entry methods. Now, we'll look more at the accounting process itself.The first item of concern is your...More
Many critical electrical systems are not being maintained to the proper standard, and some are not maintained at all.Why? Maybe it's because electrical...More
If there's anything to the what's-in-a-name business, Continental Electrical Construction Co. may have seen it coming when they opened shop in Chicago...More
Alternating current (ac) loop impedance testing, a testing procedure long-established in Europe, is only recently beginning to find its way into U.S....More
Almost every contractor who just entered the datacom business says the same three things. 1) "I make a lot more profit on data wiring than I do on power...More
These days power-quality trouble-shooters need to do more than decipher data from three-phase monitors. They need to be skilled at using test tools to...More
When the specter of the Millennium Bug-also called the Year 2000 (Y2K) problem-began to rear its ugly head, many corporations spent big money trying to...More
LEDs have unique and compelling characteristics that make them ideal for industrial lighting applications. But there are a variety of misconceptions about LEDs, how well they work, how long they last, and more. Digital Lumens developed this whitepaper to dish up the facts around LEDs and address some common misunderstandings....More
An arc flash is associated with the explosive release of energy caused by an electrical arc, due to either a phase-to-ground or a phase-to-phase fault. This kind of fault can result from many factors – a dropped tool, accidental contact with electrical systems, buildup of conductive dust, corrosion or improper work conditions.....More
Abstract: In this webinar, Mike will not only explain the current NEC requirements for GFCIs and AFCIs, but he'll explain how they operate, what causes their premature failure, and when they won't provide the safety protection you might have thought they would.
Abstract: This webinar will teach attendees the difference between risk and hazard, and how the choice of system grounding has a direct impact on reliability and safety.
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