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, we looked into positive, negative and zero-sequence components, also known as symmetrical components, with virtually no math involved.

It is a sign of tight budgets when facility directors at most K–12 and higher education institutions receive mandates to defer maintenance on their existing building inventory to allow for budget dollar application elsewhere.

“Dark fiber” is a term often heard in conversations about fiber optic communications. Perhaps this is because it has a name that sounds evil or nefarious. But dark fiber is just fiber that has been installed and is not currently in use; instead, it is reserved for spares or future use.


If you’re going to do a job right, you need the right tools. Today, the definition of tool goes beyond wire crimpers and multimeters. It now includes smartphones and the apps that make them crucial to a contractor’s success. The following are some of the apps that contractors could consider using.


More on Systems

 
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
by Staff |
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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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What and Why? Testing Gigabit Ethernet
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Last month we looked at the state of Gigabit Ethernet today and recognized that it will be confined to backbone networks and server connections for the reasonably foreseeable future, simply because most desktops can’t use such speed.

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Category 6 Cabling - Standard or Not?
by Staff |
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I guess the honest answer to the above is, “We’re working on it.” Most manufacturers have products (cable, jacks, patch cords, and test equipment) out in the marketplace promoted in one fashion or another as Category 6 compliant.

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High-tech Robots Deploy Fiber Optic Cables in Sewer Systems
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CityNet Telecommunications Inc. has launched the first commercial deployment of a fiber optic network through a sewer system. The first-of-a-kind deployment was conducted in the city of Albuquerque, N.M.

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Lighting Controls: Profiting from Mood Lighting and Dimming
by Staff |
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True story: A few weeks ago I went to a major retail store to buy a new television. The model I liked was on sale and had all the features I wanted. Or so I thought.

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