Electrical Contractor Magazine

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. 

Optical local area networks (OLAN) will cause you to rethink practically everything you have learned about LANs and LAN cabling. Of course, any major change in technology like this causes FUD (fear, uncertainty and doubt), just like voice-over Internet protocol (VoIP) and Wi-Fi have already. 


Sometimes, a power quality investigation can lead you to see things that you aren’t really looking for and might be a distraction from what the customer wants you to do.

Electrical professionals understand that the purpose of a smoke detection and alarm system is generally to provide life safety for building occupants. They also understand that the goal of the fire alarm system is to provide occupants with as much escape time as possible.

Fire alarm systems stakeholders increasingly raise questions concerning the acceptability of using Ethernet and other networks for fire alarm and signaling systems applications.

Electrical Contractor Magazine

More on Systems

 
Wiring Transportation Hubs for Modern Communications
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In 1996, Congress passed the Telecommunications Act to “provide for a pro-competitive, de-regulatory national policy framework designed to accelerate rapidly private sector deployment of advanced telecommunications and information technologies and services to all Americans ...” That’s all well and g

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Troubleshooting Fiber
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The fiber optic cable you just installed failed testing. What do you do next? How do you find the problem and fix it—fast? Fortunately, fiber optics is easy to install and experienced installers generally find that about 95 percent of all fibers they install will test good.

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Ethernet Evolves at Lightning Speed
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Ethernet...good old Ethernet. It seems as if this type of LAN technology has been around virtually forever. It also seems as if Ethernet will continue to be the driving force behind system networking, especially since this technology continually changes with time.

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Why is Bandwidth Finite?
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When fiber was introduced,its enormous bandwidth and extremely low attenuation made it the No. 1 choice to replace copper in long-distance telephone networks. Once the telcos switched from multimode to single-mode fiber in 1984, they found almost boundless bandwidth.

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Stationary Pump Installation, Grounding and More
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CODE CITATIONS Article 110 Requirements for Electrical Installations Article 250 Grounding Article 408 Switchboards and Panelboards Article 410 Luminaires (Lighting Fixtures), Lampholders, and Lamps Article 430 Motors, Motor Circuits, and Controllers

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Storage Area Networks Take Two Steps Forward
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The latest buzz in the low-voltage market is Storage Area Networks (SANs). SANs began in a mixed environment, and contractors had to deal with different host bus adapters and different configurations. Resolving compatibility problems often involved calls to numerous vendors. That is changing.

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Tune into Wireless
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We’ve come to know it and love it: the wonderful world of wireless. Otherwise known as radio frequency transmission, wireless has gone mainstream, with hands-free and remote capabilities a way of life. If you think electrical contracting has nothing to do with wireless, you’re wrong.

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