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, I discussed one of the most important tools in the fiber tech’s toolbox: the fiber optic power meter. This month, let’s examine the other tool that is equally important: the test source used with the power meter to measure the loss of the cable plant.

I recently realized that our failure to properly train fire alarm system technicians has created a group of workers who simply do not understand the reasons they do what they do. When a technician asks for the rationale behind a procedure, we often respond, “Because the code requires it.”


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

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.

More on Systems

 
It’s Time to Make the Move to Cat 5e
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The expansion of high-speed copper data cabling options—from Category 5 into Enhanced Category 5e, Category 6, and a multitude of proprietary classification schemes—has left customers and contractors confused about what they need, and even about what they’ve got once they’ve bought it.

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Web-sters Chasing Your Business
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If, as has been suggested, there are really 170 to 210 Web enterprises chasing the construction industry’s business, electrical contractors who want to buy electronically should be in paradise right now. Enjoy it: Many of those sites won’t be around for very long.

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Choosing a Pricing Strategy For Your VDV Services
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Successful electrical contracting firms consistently earn higher-than-normal profit margins in the voice/data/video (VDV) market by providing VDV solutions, not just by selling time and material with a markup. Expanding a business paradigm goes beyond expanding its scope of services.

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VDV Support Selection: No Longer an Either/Or Choice
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For voice/data/video (VDV) cabling installations, as with power installations, everyone—including electrical contractor and client—benefits from support systems that are easily installed overhead in a suspended ceiling or under a raised floor and readily accept cable initially and during later addit

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Loss Testing of Laser-based Networks in the Premises
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Private networks in premises and campus environments are increasingly moving toward high-speed applications, such as Gigabit Ethernet, in order to handle the ever-increasing bandwidth requirements for more and faster data transmission.

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Contractors Face Incompatibility Issues in Low-voltage Installations
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Prior to the advent of national and international standards, IBM, DEC, Wang, and others created proprietary networking systems.

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Accurate Loss Testing of Premises Fiber Optic Links
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Premises fiber optic cabling link testing requires precise referencing methods to obtain accurate and valid results. Loss testing for multimode fiber cabling is specified in ANSI/TIA/EIA-526-14A. This standard contains two test procedures: Method A and Method B.

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