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Siemens Looks for the Latest in Innovative Fire and Life Safety Design

Siemens has opened submissions for its fourth annual Engineering Innovation Award for Fire and Life Safety design.


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Energy-Efficiency One of Largest Jobs Sectors and Growing, Study Finds

In December, Environmental Entrepreneurs (a national non-partisan business group) and E4The Future (an energy efficiency advocacy group) released a report titled "Energy Efficiency Jobs in America."


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Infographic: Build or Buy Temporary Power Equipment?

It's an irony of moder construction that, to deliver power to a job site, an electrical contractor must first establish temporary power.


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LEDs Instrumental in Turning Abandoned Warehouses Into Urban Crops

Crops, of course, have always relied on three things from nature: soil, water, and sunlight. If executives at AeroFarms have their way, though, the future of crop growing will be mesh cloth, small amounts of water, and LED lights.


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States Ranked on Energy-Efficiency Efforts

Regardless of what the federal government does or does not do in the coming months and years to incentivize and otherwise promote energy efficiency initiatives, most states are continuing to ramp up their own efforts.


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Zigbee Alliance logo courtesy of www.zigbee.org
Zigbee Alliance Introduces Dotdot to Unify the IoT

These days, almost anything for the home can be automated. Door locks, window blinds, switches, toasters—all are available as "smart devices" connected to the Internet of Things (IoT). Despite this bevy of products, they can’t all work together.


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Ideas That Work: Best of 2016

Ideas That Work is one of the most consistently well-read features in the magazine. Every month, it fosters community and idea sharing among contractors, electricians, and installers with the goal of saving our readers time, money, and frustration.


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New Calls to 'Get the LED Out'

Recently, LED lights have been touted as the technology that would catapult the nation's lighting program into the future, but there is now growing concern over the potential negative impact of LED lights on human sleep patterns and nocturnal animal health and behavior.


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CC-BY-SA-3.0/Matt H. Wade
New Administration, New Congress, New Opportunities

It can be safely said that 2016 will prove to be a memorable year in Washington, D.C. Everything the experts knew about politics was turned upside down and inside out as the election results broke nearly every rule we have ever known.


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Deepwater Wind's Block Island Wind Farm. Photo credit: Deepwater Wind
Block Island Wind Farm Begins Generating Electricity

Deepwater Wind’s Block Island Wind Farm officially began generating electricity on Dec. 12.


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We'll Keep the Light on for You

Do you remember in the movie “A Christmas Story,” the dad wins a “major award” that turns out to be a table lamp shaped like a woman’s leg in a mini skirt? Classic! Think of this issue of ELECTRICAL CONTRACTOR as a major award on the topic of lighting.


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Fluke offers a full range of infrared cameras for non-contact inspection of electrical panels.
Cool Tools: Job Site Inspection Tools

Tiny video cameras mounted at the end of flexible cables. Infrared thermal imaging cameras that detect heat. The photo-taking capability of the ubiquitous smartphone. High-definition digital video and photo cameras mounted on unmanned drone aircraft.


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Fluke’s laser distance meter
Cool Tools: Measuring Tools

Measuring tapes are a basic and necessary tool. When the dimension to be measured is inaccessible, handheld, laser 
distance-measuring tools may be the only safe and practical solution. 
 There are many options today for taking measurements on structured-wiring projects.
 Laser measuring tools



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International Climate Agreement Officially Ratified

The global embrace of renewable-energy technology is fueled largely by a shared goal to reduce carbon emissions and stop climate change.


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2017 NEC: Conductors, Switches, Receptacles

This article reviews changes in Chapter 3, Wiring and Methods and Materials, and Chapter 4, Equipment for General Use, in the 2017 edition of the National Electrical Code (NEC).
 336.10 Uses Permitted



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What is a knife switch?

Knife Switches, AHJs And More

Jim Dollard has an extensive background in codes and standards. If you have a query about the National Electrical Code (NEC), Jim will help you solve it. Questions can be sent to codefaqs@gmail.com. Answers are based on the 2014 NEC.
 What is a knife switch?



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Replacing the driver

Out With The Old: Replacing LED Drivers


The majority of LED lighting products use an electronic driver that functions similarly to a fluorescent ballast. The driver converts incoming alternating current (AC) to direct current (DC) and drives this current to the LEDs.



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Taking Your Temperature: Health and Wellness Programs in the Workplace


The U.S. DepartmentS of Labor and Health and Human Services estimate that more than half of all employers offer their employees some form of wellness program. Statistics also indicate most organizations that don’t have a program in place plan to add one in the future.


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Open to Interpretation: The Accuracy of Optical Loss Measurement Data


Last month, I discussed making loss measurements with a light source and power meter—what we call optical insertion loss—and the causes of errors in those measurements.


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The Surveillance Migration

There is no doubt that video surveillance cameras are a critical, indispensable part of security at the customer’s protected premises. They can provide general security and assist with human resources functions when integrated with access control.


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