For this issue concerning public spaces, it seemed appropriate to feature something that the press often calls “stray voltage.” Several recent incidents involving utility Con Edison made headlines in the New York press.
Fluke Corporation has collaborated with American Trainco to offer a professional training opportunity important for anyone responsible for electrical system installation, maintenance and troubleshooting in commercial and industrial facilities.
With oil prices topping $100 per barrel, energy conservation is again garnering significant attention. Though oil and its byproducts are not a direct source of electrical energy, they have an impact on costs.
Though some rules can be overlooked without consequence, some are simply too important to not follow. Two rules, in particular, are at the fundamental analysis of all power systems: Ohm’s Law and Kirchoff’s Law.
As a sequel to the discussion of adjustable speed drives (ASDs) in last month’s column, it seems appropriate to show how ASDs are a classic example of the often-quoted line from IEEE 1100 (also known as the Emerald Book).
In a recent article, we briefly discussed the concepts of efficiency and effectiveness with regards to power consumption. It was timely with all the press coverage lately about being “green,” reducing one’s carbon footprint, lessening global warming effects and the like.
Being a member of the Technological Committee for my local school district since its 1994 creation, I have seen first hand the exponential increase in the number of computers, servers, printers, white boards, digital cameras and other technology tools for faculty and students to access each other a
At a recent training session in Washington, DC, we plugged a power quality monitor into a baseboard outlet to get data to illustrate the different parameters and characteristics of voltage and current waveforms.
In the September issue of ELECTRICAL CONTRACTOR, there was an Industry Watch story titled “Efficiency from the Wall to the PC,” about an organization that is campaigning for more efficient power “cords.” There was a reference to a quote indicating only 50 percent of the power that leaves the outlet
The term “carbon footprint” is often applied to industrial facilities, where significant consumption of various forms of energy is measured against the effects on the environment as compared to the product output.
One of the expressions I remember hearing during my childhood was “Mind your P’s and Q’s.” When I would ask where that expression came from, it usually resulted in another popular expression, such as, “Don’t talk back to your elders.” With the benefit of the Internet, the answers are there, but the
IN“The Velveteen Rabbit” by Margery Williams, the Rabbit asks the Skin Horse, “What is Real?” A customer reminded me of this line when he asked a similar question in regard to the parameter watts used to measure electrical power.