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. 

When one of the coaches was asked before the “big game” what would be the key to his team’s success, he said, “executing the fundamentals.” While blocking, tackling, passing and catching may work for football, Ohm’s and Kirchhoff’s Laws are fundamental to understanding any power quality issue.

In this power-hungry world, people find it unacceptable to lose their connection to electricity. A backup generator can supply peace of mind, bringing home- or business-owners the emergency power they need.

An estimated 3 percent of every sales dollar in the United States is spent on solving power quality (PQ) problems, according to Christopher Forthaus, senior product manager, test division, Ideal Industries Inc., Sycamore, Ill.


Employers are responsible for providing a safe workplace. Reducing or eliminating the number and severity of musculoskeletal disorders (MSDs)—which affect muscles, nerves and tendons—and their associated costs is an important component in achieving that goal.


Electrical Contractor Magazine

More on Systems

 
The Mysterious dB of Fiber Optics
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Whenever tests are performed on fiber optic networks, the results are displayed on a meter readout in dB. Optical loss is measured in dB while optical power is measured in dBm. Loss is a negative number (like -3.2 dB), as are most power measurements. Confused? Many fiber optic techs are too.

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Extreme Installations
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Often an electrical contractor will be asked to install a fire alarm system in what some would define as a “harsh” environment. In these cases, the contractor must be ready to satisfy his or her customer’s request for an adequate, code-complying system.

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ECs and eBay
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U.S. consumers fall into two camps: Those who have used eBay, and everybody else. Most of the first group—whether regular users or not—are fairly enthusiastic about the experience.

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Retrofit Market Eyes CCTV
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If you are an electrical contractor who offers voice/data/video, fire or other low-voltage systems and services, you’ve probably been getting more inquiries from end-users who want to retrofit their aging security systems.

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IP Telephony
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Telephony is the most basic form of communication, and we are not talking about the kind that carries you through a cocktail party.

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Enhanced Web Applications
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The Internet is as popular as ever. It seems you can’t turn around without bumping into something Web related. But the Internet has evolved; there is more to it than surfing for sports scores and celebrity gossip.

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Design and Documentation
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What is documentation and why is it important? We hear about “documenting” a network, but we don’t often listen. It seems like too much work for too little or no payback. But that way of thinking is wrong.

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