Systems

 

 

Integrated electrical and low-voltage systems of all types—inside and outside a building—encompass the range of work that electrical contractors do. The articles in this section highlight different types of work, from security, fire and life safety, to traditional electrical power and distribution, to lighting, cabling and more. 

When a dead body was discovered in a hot tub in Bentonville, Ark., in late 2015, detectives looked for forensic evidence in uncommon places.

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.


Figure 1: Power quality phenomena over the voltage range

The lights blinked for an instant, or a running appliance made a sound like the motor was slowing down. No digital clocks were blinking, no computers restarted, no production lines stopped.

Security systems solutions are designed to keep customers and their facilities safe, detect intruders, and obtain visual evidence and identification.

More on Systems

 
Feeling Uncertain: Testing, Accuracy and Optical Power Measurements


Last month, I wrote about measurement uncertainty and metrology, the science of measurements. This month, I get more specific and cover the uncertainty of some basic fiber optic measurements, starting with optical power.



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An Endless Summer: Persistent Power Quality Problems

While renovating a basement, I came across a poster for “The Endless Summer,” a film released 50 years ago in which two surfers travel the world’s oceans, chasing warm weather and surfing adventures.


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Wired For The Information Age

Automation is on the cusp of changing our lives—from the speed with which an ecommerce order is fulfilled, to the method we use to check in to our flight and travel to our destination.


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Central Intelligence: The IoT Brings Big Changes 
to Data Centers

The Internet of Things (IoT) may alter the appearance of data centers. The IoT is a growing system of data that puts demand on existing data centers and pushes for new facilities that are centrally located and “on the edge,” a trendy phrase to describe the point at which sensors are installed.


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Outside Influences

The green buildings market can offer a significant opportunity for electrical contractors that install fire alarm systems. Are you ready for this? How does your plain old fire alarm system installation help to meet the requirements of a green building?


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Web Exclusive
Critical Infrastructure, Data Centers and Cybersecurity, Part 2

As stated in Part 1 of this series last month, when it comes to the architecture of mission critical systems for any organization, the power and network infrastructure layers need to be reliable, redundant, and resilient.


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New York Puts Green Backup Power on Wheels

This summer, New York-based Consolidated Edison (Con Edison) spent $1.6 billion to upgrade its delivery system, including 12 network transformers, 70 overhead transformers, 16 underground feeder sections, 37 overhead sections of power lines and reinforcement of 25 electric feeders.


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