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

 
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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Opportunities and Challeges Continue to Grow in the Fire/Life Safety Systems Market
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The estimated installed market value of fire alarm systems in commercial facilities is valued at nearly $3.3 billion. It is estimated that systems installers account for more than half of this market value (55 percent). This information is based in part on the “U.S.

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Fiber Optic Cleaving Techniques
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A good cleaver helps cut out costly mistakes To get good fiber optic splices or terminations, especially when using the pre-polished connectors with internal splices, it is extremely important to cleave the fiber properly.

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'James Bond' Surveillance
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Covert “007” techniques are possible James Bond, watch out! Now, many of the techniques employed by the action adventure hero turned cultural icon are possible—especially when it comes to closed-circuit television surveillance (CCTV).

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