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. 

Lightning-induced damage


In the August issue, I reviewed some common power-quality related issues, including insulation failures on a motor’s outer windings, unexplained offline trips of adjustable speed drives, blown fuses on surge suppression strips, damaged electronic equipment power supplies, premature lamp and ballast

A Class A office renovation using DC lighting

In today’s digital era, building managers and channel professionals are increasingly open to building envelope systems that provide greater efficiency, connectivity and ease of use for building operators and occupants alike.

Back in the early 1980s, when I first began working on standards committees for fiber optics, it was under the auspices of the Electronics Industry Association before they merged with the Telecommunications Industry Association (TIA) and turned the work over to them.

Outdoor video security is tricky for security specifications because variables, such as topography, weather and lighting, can affect accuracy and catch performance.

More on Systems

 
Industrial Automation

From 2001 to 2003, the United States saw the worst industrial decline since the Depression with customer capacity reduction, including outsourcing and consolidation.


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The Buzz on ZigBee

ZigBee-it sounds like a new toy or Disney character, but it is actually a technology that is helping to, once again, reshape wireless networking. ZigBee is a protocol known as the IEEE 802.15.4 Standard.


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Integration-In a Not-So-Perfect World

It's really happening. Integration is starting to take hold in every vertical market and business operation. It has been a long, tough road.


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PV System Components

The most focused on and visible part of a photovoltaic (PV) installation is the technology used. PV technology usually takes the form of rigid PV panels mounted on a building's roof, which represents another independent building system that needs to be installed.


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Straight Talk About 'Trusted Computing' (TC)

“Trusted computing” (TC) is another modern commercial computer tool. Just what does that mean? The dictionary presented definitions such as “have faith in,” “rely on,” “have confidence in” and “count on.” The concept and need for “trusted” computing started with our own federal government.


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Ensuring Earth Connection

In the 2002 and previous editions of the National Electrical Code, the metal frame of a building or structure was required to be used as a grounding electrode when the metal of the building or structure was effectively grounded.


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Add Sound to Your Repertoire

You've heard it before: Your customer wants structured wiring and networking, and they also want a sound system. Is it over your head? Not if you take the time to learn some simple steps to increase your business and get started in this growing area.


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