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. 

Last month, we discussed “dark fiber” and how most outside plant installations include more fibers than are needed at the time of installation. Later, those fibers will be used for expanding service capacity or leased out to provide income.

Our Houses—or, at least, the houses of the tech-savviest among us—are getting closer to running autonomously. Now, it’s not just that you can open your garage door or turn on your living room lights from a smartphone app.

Do you have a customer that requires additional access control at specific locations within their facility but no budget for a total rip and replace? Maybe they are concerned with hacking or data compromise.

The categories or labels used to describe the plethora of power quality phenomena that can occur on electrical systems have not changed much in the past decade or two. Measurement methods and acceptable limits for most systems have changed.

Electrical Contractor Magazine

More on Systems

 
Fuel Cells--Power Source for the Future
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It has been three decades since fuel cell technology first emerged, but the clean and efficient power alternative is just now beginning to take off.

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Homeland Security: Contractors Vie for New Systems Installations
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Without a shadow of a doubt, the events of Sept. 11, 2001, changed the world. Our understanding of what it means to feel safe and secure were forever altered.

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Call to Action to Protect Government Facilities
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The attacks of 2001 may be in the past, but efforts to fortify government facilities against terrorist acts continue. A crucial turning point came for the United States on the morning of Sept. 11, 2001. It was then that the people of the U.S.

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Testing Fiber Optic Loss
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Two measurements of optical power required Compared to Category 5e or Category 6, fiber optics wire is easy to test. A “flashlight test” can make sure the fiber has continuity and is correctly identified.

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Making the Grade
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A system assessment is essentially a comprehensive overview of the structure, layout and functionality of any given system. In the world of electrical contractors, we are more often than not referring to networking systems, even though the same methodology applies to electrical systems.

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NM Cables Installed in Temporary Installations
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Article 305 for temporary wiring in the 1999 National Electrical Code has been relocated to Article 527 covering temporary installations in the 2002 NEC.

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Help Is On the Way
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Look for a new fiber test bulletin (not a standard) from the Telecommunications Industry Association (TIA ) in 2003. We all know fiber is looked at as more difficult to work with, so maybe that is why a new guidance bulletin is coming out that better describes fiber testing in the field.

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