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

 
Homes Are Becoming Smarter than Humans
by Staff |
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First it was cars chirping up to let forgetful drivers know, “Your lights are on.” Now, the home is becoming smarter and better able to “think” for itself. Whether you love or hate the idea of a house that is smarter than you are, the fact is that the smart home is coming.

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VDV Cabling Systems Update
by Staff |
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In a period marked by turmoil in high-tech businesses, voice, data, and video (VDV) cabling technology continues to progress toward better standards and higher bandwidth for commercial applications.

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Fiber Optic Measurement Errors
by Staff |
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Testing installed fiber optic cabling or patchcords is not difficult, but sometimes it seems the results you get don’t make sense. After 20 years in the business, I’ve probably seen most of the possible errors. If I share them with you, perhaps you will avoid them.

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Balancing Fiber and Copper in Networks
by Staff |
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There are many options when choosing the correct cabling media for your network installation. Category 5e, Enhanced 5e, Category 6, single-mode, and multimode fiber are among the selections you have.

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Next-generation Multimode Optical Fiber - Where Does It Stand?
by Staff |
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In the May 2001 Electrical Contractor, my article mentioned that a high laser-bandwidth 50-micron fiber was being considered for use for LANs less than 300 meters in length. So where does it stand, now that five months has past?

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A Web-Footed Tour of NECA's Show
by Staff |
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Recent NECA Shows included many dot-com exhibitors. While this month’s 2001 preview isn’t as heavily populated, an e-commerce “tour” is possible in Washington, D.C., from October 21 to 23. For information, see www.necashow.org.

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