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. 

For several recent columns, I have been writing about splicing optical fibers. Last month, I covered managing fibers inside the splice trays and closures. But there is even more to know about splice closures.


The evolution of intelligent building system technology has triggered shifting roles for contractors and integrators, and the choices they make in their own specializations over the coming years can mean the difference between winning contracts and keeping customers or becoming less relevant.

Demand for wiring and cabling is expected to grow in the months and years ahead. Low-voltage applications for light-emitting diode (LED) technology and fiber optic cabling within the power-generation and telecommunications industries will help drive this market.

The 93XC OTDR is part of the Greenlee Communications family of fiber equipment.

With the increasing use of fiber optic cable in structured wiring, many electricians experienced in low-voltage copper work are extending their skills to include fiber. Working with fiber requires training and the right tools and testers to correctly install and maintain fiber optic cable.


More on Systems

 
The Mysterious dB of Fiber Optics

Whenever tests are performed on fiber optic networks, the results are displayed on a meter readout in dB. Optical loss is measured in dB while optical power is measured in dBm. Loss is a negative number (like -3.2 dB), as are most power measurements. Confused? Many fiber optic techs are too.


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Extreme Installations

Often an electrical contractor will be asked to install a fire alarm system in what some would define as a “harsh” environment. In these cases, the contractor must be ready to satisfy his or her customer’s request for an adequate, code-complying system.


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ECs and eBay

U.S. consumers fall into two camps: Those who have used eBay, and everybody else. Most of the first group—whether regular users or not—are fairly enthusiastic about the experience.


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Retrofit Market Eyes CCTV

If you are an electrical contractor who offers voice/data/video, fire or other low-voltage systems and services, you’ve probably been getting more inquiries from end-users who want to retrofit their aging security systems.


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IP Telephony

Telephony is the most basic form of communication, and we are not talking about the kind that carries you through a cocktail party.


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The Lowdown on Camera Lens Advances

Variety and innovation mean installation flexibility when it comes to lenses for closed-circuit television surveillance (CCTV). That’s just what the end-user needs: a camera and lens that can satisfy whatever the surveillance application dictates.


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Cities Unto Themselves

Hospitality and gaming facilities, with their large crowds often sharing one property, need quick and reliable fire detection systems with the ability to pinpoint the area in alarm to allow selective and orderly evacuation.


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