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. 

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.

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.

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.

For healthcare facilities, many states use only National Fire Protection Association (NFPA) 101, Life Safety Code, because it is the code that the joint commission references.

More on Systems

 
Video over IP Gains Ground

Live video has come a long way since the early 1990s. Remember the images of reporters filing news reports through the analog-transmitted video feed during the first Gulf War? It was shaky at best. But times and technology have changed and video streams are not even close to what they were then.


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Use Your Metal

The failure of a service-entrance bus duct supplying power to a major grocery store data center and corporate facility created a dilemma for store management.


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Ironing out the Kinks

When wireless sensors and detectors came on the market decades ago, the devices were known more for missing signals than capturing alarm activity. They were used in a “patch” type of approach, applied when hard-wired devices were impossible.


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Essential to the Integrated Environment

Sensors and detectors have upped the ante with intelligent features and supervision, making them essential to an integrated and automated building environment.


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More than 'Just in Time'

'Just in time' used to be the battle cry in security product manufacturing and distribution. Now, it is more than just in time-it is all about arming the contractor with the information they need to boost sales and present the end-user with a product portfolio adeptly suited to the application.


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Catch a Wave

Many fiber optic specifications and tests refer to wavelength because most parameters have some wavelength dependency. Attenuation, for example, is caused by absorption and scattering. Absorption occurs at certain wavelengths and scattering gets less significant at longer wavelengths.


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E-J Electric Builds Two 500 MW Power Plants

Across the East River from Manhattan, construction workers are erecting two separate power plants intended to help solve the city's power problems. One contractor has been constructing the electrical systems for the NYPA 500 MW and the Astoria Energy 500 MW power plants in Astoria, Queens.


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