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Denver Benchmarking Aims For Greater Building Energy Efficiency

In the fight against climate change, cities are leading the charge.


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Record Breaking Storage Facility Captures the Sun in San Diego

As renewable energy becomes mainstream, more providers are taking steps to store that power. Regulators are requiring more capacity, and utilities are responding to that challenge.


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Are You Smarter Than a Fifth Grader?

When It comes to technology, we occasionally turn to anyone younger—who we suspect might know more than us—for help. OK, sometimes it’s because we forgot our glasses and can’t see our phone.


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Lighting controls save energy by turning off or reducing lighting when it's not needed. The smarter the control and the more flexible the light source, the greater precision in delivering maximum energy savings. Because LED lighting is instant-on and easily controllable, outdoor lighting control now offers higher energy cost savings through flexibility.
The Bright Outdoors: Outdoor Lighting Control

According to the U.S. Department of Energy (DOE), about 160 million lamps operated in the building exterior, parking area and roadway lighting markets in 2010. Building exterior made up 39 percent of these lamps, parking 33 percent and roadway 28 percent.



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Sensory Overload: BLE Indoor Positioning Systems

Just as building intelligence systems draw information about a building’s environment to help manage the facility’s efficiency and comfort, a low-cost sensor system is piggybacking on that trend, and it offers new opportunities for contractors.



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Photo courtesy of Robert Romanoff and Dwight School
Absolute Electric President Introduces First Graders to the Trades

In the effort to bring more young people into construction and the trades, it could pay off to look even younger than you might think.


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ASCE’s Infrastructure Report Card Provides Low Marks and Cautious Optimism

Every four years, the American Society of Civil Engineers (ASCE) releases its Infrastructure Report Card, which grades the condition and performance of infrastructure in the United States.


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Controversy Over Rooftop Solar Heats Up In Utah

Despite its growing popularity, solar power does have its detractors. Pushback from utilities and lawmakers have made headlines in Arizona and Oklahoma. Now, add Utah to the list.                        


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Energy Efficiency Program Sees Results in Maryland

While the Maryland state legislature debates whether or not to extend the EmPOWER Maryland energy efficiency program, the American Council for an Energy Efficient Economy (ACEEE) has released multiple studies encouraging it to continue.                                           


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Carbon Capture On The Rise In Texas

Some may be skeptical of its credentials, but carbon capture has its proponents, and as policy makers have been known to say, everything should be on the table.


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International Power Line Connects United States And Canada


In January, the National Energy Board (NEB) of Canada announced that it has approved the Lake Erie Connector Project, a 117-kilometer (km) international transmission line that will connect Ontario with Pennsylvania, running under Lake Erie.


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Powering America Tackles New Milwaukee Skyscraper


The Powering America Team is helping transform the Milwaukee skyline. With the new Northwestern Mutual Tower and Commons, comparisons are being drawn to another nearby metropolis more well-known for its tall buildings.


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Findings From ELECTRICAL CONTRACTOR's Subscriber Research Panel

In the past year, ELECTRICAL CONTRACTOR expanded its already-robust market research efforts to include a new endeavor.


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Hioki PQ3100 PQ analyzer
Cool Tools: Power Quality Testers 2017

The quality of electric power that operates building systems has always been important, but as these systems have become more complex, the effects of power quality (PQ) issues have multiplied.



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Special Occupancies

This article provides a review of the significant changes to the rules for healthcare facilities contained in Chapter 5, Special Occupancies, in the 2017 edition of the National Electrical Code (NEC).
 517.2 Governing Body of Health Care Facilities



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Auxiliary grounding electrodes

Homemade Labels, Accessing Overhead Disconnects 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 2017 NEC.
 Auxiliary grounding electrodes



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Cut To The Chase: Chase Nipples in Switchboards, Panelboards and More


During the past couple of months, I have had questions about whether a chase nipple, a raceway (conduit) nipple or a hub can be used to enter into panelboards, load centers, switchboards, switchgear, motor control centers and substations as transitions from cable trays into enclosures.


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Laying Down The Law: Lighting Legislation on Energy Efficiency


Milestones in January and February raised the bar on energy efficiency in the lighting industry. In January, Energy Star Lamps V2.0 took effect, and it was predicted to significantly influence lamps promoted by utility lighting rebate programs.


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Line In The Sand: The 40 Calories Per Square Centimeter Dilemma


It’s the same old story. An arc flash study was just completed, and the calculated incident energy exceeds 40 calories per square centimeter (cal/cm2) in many locations. When this happens, people often just shake their head and ask, “Now what do we do?”



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Hidden In Plain Sight: Hazardous Energy in the Workplace


Electrical energy is the most common hazardous energy in the workplace. For electricians, linemen and wiremen, it likely is the most familiar. However, hazardous energy comes in many forms, including mechanical, chemical, nuclear, pneumatic, hydraulic and gravitational.


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