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. 

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Days Gone By
by
Wayne D. Moore
|
April 2013

The fire alarm systems industry has changed considerably over the years. Many old-timers can remember a fire alarm system that only detected a fire and sounded an alarm. Nonfire alarm systems did not interface with these fire alarm systems.

Fire Focus, Industry Trends
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NFPA 72 Has Class

by
Thomas P. Hammerberg
|
April 2013

The history of classes and styles of circuits is interesting. Back in 1987, a proposal was accepted to start using Styles of Circuits instead of the Class A and B we were all used to. Well, at least some thought so.

Life Safety Systems, Integrated Systems, NFPA 72
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Copper Vs. Fiber
by
Claire Swedberg
|
April 2013

As bandwidth demands continue to rise, both copper and fiber cable manufacturers are developing products that offer greater capacity and flexibility.

Copper, Fiber Optics, On the Market, Integrated Systems
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A Blended Approach

by
William Atkinson
|
April 2013

H&S Electric Inc., Valencia, Calif., has been in business since 1990. Its services include construction, commissioning, consulting, energy analysis, engineering safety, green building/­sustainability, maintenance and operations, systems management, systems design, and technology evaluation.

Grow Your Low-Voltage Business, Low Voltage, Integrated Systems

More on Systems

 
How Many Fibers Are Enough?
February 2001
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Our local newspaper reported that the local phone company had completed installing fiber optic cables between their central offices in the Boston area. That didn’t surprise me, but what did was the description of the cables they were installing. Each cable had 864 fibers in it!

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You Had to Be There—The First E-Contracting Conference
January 2001
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“If you don’t feel confused and scared, you don’t know what’s happening.” With that quote from GE Chairman Jack Welch, one speaker got the rapt attention of a couple hundred contractors and e-commerce exhibitors who attended the first e-contracting conference, sponsored by Electrical Contractor maga

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Choosing Fiber for Premises Applications
January 2001
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Up until a couple of years ago, one never thought about choosing the fiber in the fiber optic cable you bought. If you were buying cable for outside plant applications like telephone or CATV networks, you chose single-mode fiber.

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CCTV Integration with Optical Fiber
January 2001
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As with so many other areas of technology, optical fiber is making serious inroads in the traditional copper and coax segments of the new-installation business for closed-circuit television (CCTV).

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Extranet Use Enhances Employee Education, Project Management, and Procurement
January 2001
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Electrical contractors are giving higher priority to bringing company and project management into the Internet age. While the final solution may take time, multiple choices are taking shape, each offering significant benefits.

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Which Fiber, at What Speed, and for What Distance?
January 2001
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Copper technology has evolved to the point where a 100-meter maximum distance is among the golden rules of premises cabling. This rule is rooted in 10BASE-T Ethernet and the first edition of Telecommunications Industry Association/Electronic Industry Association (TIA/EIA)-568 in 1991.

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How Much of a Computer Do You Need to Succeed?
December 2000
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Look through this issue’s advertisements. I’ll bet you can’t find more than a few that do not include an Internet address to contact for more information. This “www” address is a Uniform Resource Locator (URL), which is used to view a particular site on the World Wide Web.

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