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. 

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.

When a potential client calls on you to provide a fire alarm system, do you assume the design responsibility? If so, what resources do you use?


More on Systems

 
The Web Can Help Us Do Important Things, Three Large Contractors Say
by Staff |
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From Louisville, St. Louis, and Leavenworth, Kan., the three contractors profiled — this month and the following two months — are working to become even more lean and efficient.

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NYSERDA Supports Voice-recognition Thermostats
by Staff |
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Many people talk to their programmable thermostats. The problem is that they are usually cursing the devices because they are so difficult to program. In fact, studies show that only 31 percent of owner-occupied homes with programmable thermostats installed have actually programmed the devices.

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Are Telecommunications Closets Obsolete?
by Staff |
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Last month, we discussed the centralized fiber optic architecture and how it affected network design. This month, we’ll continue the discussion, looking at how this can affect the design and/or need for a telecommunications closet (TC).

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Understanding Cable Materials and Tester Measure Categories
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Various Gigabit Ethernet testers are available.

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10 Gbps Ethernet as a Fiber-only Platform
by Staff |
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As soon as the Institute of Electrical and Electronics Engineers (IEEE) finalized the 1 Gbps Ethernet solution on fiber, they began work on the 10 Gbps Ethernet solution.

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Integrating Audio with Other Systems
by Staff |
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Several times each week, someone calls, saying, “HELP!

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Futureproof Your Installations
by Staff |
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“The world is going digital.” Recently, a customer service representative of my favorite long-distance provider made this statement. (I’m not being sarcastic when I use the word “favorite.”)

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