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. 

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).

After years of low compound annual growth rates (CAGRs) and limited innovation, the home security market is finally evolving with new and affordable security control products, and systems are becoming widely available, according to a November 2013 blog from Amdocs Inc., a software and service provid

Electrical Contractor Magazine

More on Systems

 
Upon Further Inspection ...
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Simple power quality problems often evolve into tangled webs that take a long time to unravel.

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Days Gone By
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The fire alarm systems industry has changed considerably over the years. Many old-timers can remember a fire alarm system that only detected a fire and sounded an alarm. Nonfire alarm systems did not interface with these fire alarm systems.

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NFPA 72 Has Class
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The history of classes and styles of circuits is interesting. Back in 1987, a proposal was accepted to start using Styles of Circuits instead of the Class A and B we were all used to. Well, at least some thought so.

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Learning About Your Tools
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While we’re on the subject of tools, we should look at some of the testing tools in a fiber optic toolbox that often do not get enough attention (see Fiber Optics, February 2013).

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I Feel Connected: Home Automation Today
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Today’s home automation market isn’t so much evolving as it is mutating, like one of those time-lapse videos of microbes in a Michael Crichton science-fiction movie.

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Gotchas
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When using a power quality monitoring instrument, there are some “gotchas” to watch out for; otherwise, your efforts can either be wasted or, perhaps worse, misleading by coming to conclusions that aren’t valid.

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Taking Up The HEM: Home Energy Management
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Home energy management (HEM) continues to be a growing opportunity for electrical contractors. With the increased energy-efficiency concerns of consumers, along with utility energy-efficiency programs in both deregulated and more highly regulated markets, there’s greater demand.

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