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. 

The 2010 edition of NFPA 72, National Fire Alarm and Signaling Code, established a new and separate chapter for emergency communication systems (ECS), which continues to evolve.

In its basic form, commissioning means testing every device, process and procedure in an integrated systems solution to ensure the final specification operates as planned and according to the owner’s design. 


I have often described the reliability of a fire alarm system installation as dependent on four elements: design, equipment, installation and maintenance. I have also explained that the last two elements contribute the most to a fire alarm system’s operational reliability.


Around the turn of the century, horse and car race courses began expanding into the casino market. The result is the “racino,” a gambling and entertainment combo that needs the latest electrical infrastructure, backup power, low-voltage security and digital access. Chapel Electric Co.

More on Systems

 
Fiber Is Tougher Than You Think
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Fiber optic cable has typically been categorized as fragile,like glass, which the actual fiber is, of course. But unlike drinking glasses that break when dropped or windows that lose every battle with a kid's baseball, glass optical fiber is incredibly strong and flexible.

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Fiber's Biggest Enemy
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Your mother was right--dirt is bad. Cleanliness can be next to impossible on the jobsite, but when it comes to fiber optics, it's mandatory. The problem is simply that fiber itself is small, about the size of a human hair.

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Simultaneous Disconnects, Generator Wiring and More
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CODE CITATIONS Article 100 Definitions Article 210 Branch Circuits Article 230 Services Article 250 Grounding Article 312 Cabinets, Cutout Boxes and Meter Socket Enclosures Article 445 Generators Article 518 Places of Assembly Disconnect for multiwire branch circuit Q: There was a requirement in the

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Flood of Products Hits as VoIP Tide Breaks Strong
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The giant wave washing over low-voltage technology is VoIP (voice over Internet protocol). Anticipating contractors’ needs, vendors introduced a flood of products to the market.

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Construction IT--Where Now?
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The dot-com nuttiness is over. Were there doubt about that, it was confirmed at the A/E/C Systems 2002 show in June in Anaheim, Calif. There were a few dot-coms, but for the most part, exhibitors--and speakers at construction industry sessions--were moving on.

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Card Access with All the 'Smarts'
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In access control, the innovation never stops. In the cards themselves and the readers, technology has stepped up to provide the highest levels of security ever.

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