Electrical Contractor Magazine

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. 

Last month, I covered the challenges to traditional structured cabling from multimode optical fiber and wireless. Multimode fiber became the favorite cabling for the backbone but never made it to the desktop because every connected device already had a free Cat 5 port.

In this third part of my series on the most common power quality phenomena, I group several IEEE 1159 categories together under the general description of “distortion.” Though one might argue that all power quality phenomena result in distortions of the voltage sine wave, these are the more steady-s

Positioning


About three years ago, security service providers started offering smart security solutions complete with professionally monitored home security services that were enhanced with home automation and energy management capabilities.

There is no shortage of organizations predicting what the construction market will look like in 2014. We have all experienced how poorly predictions may work out in some areas (e.g., the weather).

Electrical Contractor Magazine

More on Systems

 
Meeting The Code's Intent
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The last few code cycles have introduced an increasing number of performance-based allowances into NFPA 72, the National Fire Alarm and Signaling Code.

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Commissioning and Integration Gets Standardized
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Standards under development this year are creating a model for integration of building systems that will help builders, installers and integrators sort out their roles.

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Something To Talk About
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Beci Electric, Oakland, Calif., was established in 1985 by Beci Anderson (president and CEO); her father, Robert Waggener (estimator); and her brother, Rex Waggener (vice president and project supervisor). The company currently employs some 18 people in the field and six in the office.

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Group Mediator
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With today’s increasingly complex security systems, it is surprising that many organizations still use technology from multiple manufacturers that cannot communicate with each other. Physical security information management (PSIM) software can offer a solution.

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Test Flying Drones for Power Restoration
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Recent test flights in Alabama directed by the Electric Power Research Institute (EPRI) of prototype unmanned aerial systems (UAS) and payloads of video and other sensing equipment indicate that drone technology could be deployed to assess damage to electric transmission and distribution systems fol

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Smart Grid Goes to College
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Consider it a luxury. As a particular technology matures and becomes widely accepted, a new set of challenges emerge. Such is the case for the smart grid, which is passing the point of being a novelty and entering the realm of accepted practice.

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Testing: Pass Or Fail?
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The last two columns covered fiber optic power meters, test sources and the reference cables you need to test the loss of installed fiber optic cable plants. This month, I discuss using these instruments properly and how to determine if a tested cable plant passes or fails the test.


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