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. 

Contractors that are still putting estimates together using pencil and paper are not only wasting time and money, but they also are losing business. Contractors who think they can’t afford estimating software are just plain wrong.

Plug loads, according to a pilot study performed by New York-based green technology company ThinkEco Inc., make up the fastest growing end-use of electricity in the commercial sector. As the amount of electricity used by plug loads grows, it becomes increasingly important to manage it.

In attempting to explain to a colleague why we care about negative sequence components, I tried to follow the guidance that Bob Lawrie, another member of the NFPA 70B Electrical Equipment Maintenance committee, offered to me many years ago: never use a formula in an article.

Another year has passed, and we have nothing revolutionary to report about fiber optic technology—no instant-on connectors, dirt-cheap lasers or simple solutions to installation problems.

More on Systems

 
Core Strength
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Creating a safe and secure hospital environment that also promotes healing means turning away from traditional options, such as guards with stun guns, and toward technology to meet the ever-multiplying security needs of healthcare facilities.


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Traffic Control on the Information Superhighway
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The information superhighway is about to experience bumper-to-bumper traffic snarls that—even with the best planning—will become increasingly difficult to untangle.

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Deja Voltage
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Energy ETC, Union City, Calif., founded in 1993, does a lot with only six employees.

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FTTH Technology
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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.

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Clearing Up Distortion
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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

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Positioning

Warning: More Competition Ahead
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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.

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Home, Sweet Home
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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).

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