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. 

For years, there has been concern about the waking ability of fire alarm audible notification appliances. In general, they have gone through numerous changes since the 1980s. Back then, it was common to use bells to signal an alarm.

The marriage of digital technology, renewable energy and efficiency has been highly disruptive to the traditional utility business model. At the same time, according to a recent study, utilities can benefit, too.

A merger that has been in the works for years, and that has suffered some setbacks along the way, seems destined to happen after a court ruling last week.

The role of cars in power consumption and generation has taken a new twist. First electric vehicles (EVs) emerged as a viable alternative to driving on fossil fuels. Then the sophistication and capacity of battery technology expanded the utility of EVs into the realm of storage on the grid.

More on Systems

 
Wind Power - Friends and Foes

Up to 2,500 megawatts (mw) of wind energy capacity are scheduled to come online in the United States this year, bringing new power to the equivalent of 700,000 homes and injecting more than $3 billion of investment into the power generation sector. Wind power has truly become a reality.


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Certification Programs and Your Career

The U.S. Bureau of Labor predicts a 23 percent increase in new job opportunities for electricians by 2012.


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VoIP Basics

For traditional burglar alarm installers dealing with intrusion detection and monitored systems, it came as no shock that voice over Internet protocol (VoIP) was not the end-all and cure-all it was originally purported to be. But that’s the reality of emergency communications in some instances.


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On the Bandwidth Wagon

It is common knowledge that fiber optics has much more information-carrying capacity than copper wiring, mostly due to the fact that fiber optic suppliers have been touting the bandwidth advantages of fiber for so long.


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More Than It Used to Be

The Technical Committees that oversee the development of the National Fire Alarm Code, NFPA 72-2006, have started the cycle for processing proposed changes.


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Smarty Pants

Access control is a logical product to integrate. Technology continues to advance, especially in networked solutions, smart cards and biometrics, offering new capabilities and more application possibilities than ever before.


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Uninvited Guests

Network vulnerability problems often fall on the shoulders of information technology staff members and systems administrators.


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