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. 

Attacks on the general public across the globe continue to mount, but they are not solely terrorist based. Low-tech improvised assaults and attacks are increasingly carried out by individuals or small groups.

Aging buildings and sensor-based technology developments are creating unique opportunities for contractors and integrators to help building managers track the health of their facilities, the efficiency of the equipment and their usage of space.


Certified Multi-Media Solutions, Farmingdale, N.Y., is a low-voltage contractor that has been in business since 2005.

Throughout my career, I have found contractors that attempt to perform fire alarm system installations by the seat of their pants. A contractor typically has grown up in the industry with some valuable training resources.

More on Systems

 
J.M. Electrical Completes Middle-School Control-System Project


J.M. Electrical Co., a Lynnfield, Mass., contractor with a specialty in advanced automation building system installations, recently completed project operations at the 85,000-square-foot Hanscom Air Force Base Middle School in Bedford, Mass., which holds 312 students.


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Feeling Uncertain: Testing, Accuracy and Optical Power Measurements


Last month, I wrote about measurement uncertainty and metrology, the science of measurements. This month, I get more specific and cover the uncertainty of some basic fiber optic measurements, starting with optical power.



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An Endless Summer: Persistent Power Quality Problems

While renovating a basement, I came across a poster for “The Endless Summer,” a film released 50 years ago in which two surfers travel the world’s oceans, chasing warm weather and surfing adventures.


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Wired For The Information Age

Automation is on the cusp of changing our lives—from the speed with which an ecommerce order is fulfilled, to the method we use to check in to our flight and travel to our destination.


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Methods of Detection: Smoke And Heat Detectors

Recently, I encountered questions regarding the nonactuation of smoke detectors in an atmosphere the occupants reported as “smoky.” The discussions revealed a general misunderstanding of how a fuel-dependent fire grows, how smoke and heat detectors function, and how a designer should apply them to a


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First Line Of Defense

The outdoor or perimeter physical security-detection market is strong and on the upswing.


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Cool Tools: Mobile Communications

Once business people recognized cellphones as a viable communications tool, it wasn’t long before they reached construction job sites.


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