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. 

Energy consumer demand for distributed-energy resources (DER) is growing for a number of reasons—unexpected utility power outages, planned rolling blackouts, power quality problems, increases in power costs, etc.


The 2016 Profile of the Electrical Contractor reveals how electrical contractors see the industry changing and how they intend to adapt. Change occurs in the fire alarm and communications world as well. As you know, keeping up with these changes can prove difficult. 


Evolution in action


Much has been said and written about analog video cameras and the move to internet protocol (IP) networked digital surveillance. Some predicted the demise of analog and takeover by IP devices would progress quickly, but clearly that hasn’t happened.

A while back, I wrote about a house with 14 kilowatts (kW) of solar panels installed on the southern exposure roof. Voltage and current monitoring at the breaker panel prior to the solar panel installation had shown 10–12-volt (V) deep sags occurring as frequently as every 22 minutes.

More on Systems

 
Well Wired: Growing Demand for Wiring and Cabling Installation

Demand for wiring and cabling is expected to grow in the months and years ahead. Low-voltage applications for light-emitting diode (LED) technology and fiber optic cabling within the power-generation and telecommunications industries will help drive this market.


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'Good Enough': Finding the Right PQ Monitor

At a recent meeting, a comment was made that many power quality (PQ) monitor users purchase equipment that is just “good enough.” PQ monitors can be a significant capital equipment purchase for some companies, particularly smaller electrical contracting firms.


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Power to the People: HVDC Brings Renewable Energy Into the Mainstream

In the early days of electrical generation and transmission, much hullabaloo was made over the respective value of alternating current (AC) versus direct current (DC) technology, and the reigning geniuses of the 1880s, Nikola Tesla and Thomas Edison, waged a metaphorical war over the issue.


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Under Your Feet: Fiber Goes Underground

The continuing deployment of fiber optic cable is newsworthy in industry trade publications and the consumer press. Serious home-internet users want more bandwidth to download, upload and stream online video.



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Streamlining the System: Ensuring LED Application and Driver Compatibility

In today’s fast-paced and rapidly evolving light-emitting diode (LED) market, the subtle and sophisticated decisions involved in choosing and installing an LED system can be difficult enough.


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Appeals Court Upholds FCC Net Neutrality Regulations

The Federal Communications Commission’s (FCC) fight for net neutrality got another big boost on Tuesday, as the Washington, D.C., federal appeals court upheld the FCC’s Open Internet rules in a 2–1 decision.


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Is The World Ready For Biometrics?

Biometric technology has been in use for about two decades. It measures a person’s physical and behavioral characteristics, providing details that can be used to make more complete identifications.


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