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. 

In the past year, fiber optics underwent some important developments, some technical and some market-related. For those of you working in fiber optic network design and installation, the changes present opportunities and challenges.


This article is the first in a series that provides a step-by-step approach for performing arc flash calculations.
 Arc flash studies and software


I often give my power quality (PQ) 101 course to new engineers or salespeople. This introduction starts with the basics: an overview of PQ phenomena based on IEEE 1159 Table 4.2 followed by Ohm’s and Kirchhoff’s laws and how they apply to power quality.

We strive to protect building occupants, including our employees. Many years ago, the Occupational Safety and Health Administration (OSHA) formed to codify regulations in the area of employee protection.


More on Systems

 
IT Decision Makers Prefer Category 6, Survey Says

BASKING RIDGE, N.J., Nov. 4 /PRNewswire-FirstCall/ -- Avaya Inc.


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IT Professionals Concerned about WLAN Security

Ft. Lee, New Jersey, Nov. 11, 2002––ReefEdge, Inc., an industry leader in wireless network infrastructure solutions, today announced the results of a Wireless LAN (WLAN) survey of 935 IT professionals conducted via the company's website. Wireless LANs were widely deployed among the respondents.


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Popularity of Green Power Growing in the Northwest

By Rick Laezman When given the choice, a growing number of retail customers in the Northwest prefer renewable energy to fossil fuel generated power.


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NECA/IBEW Announce Web Site Dedicated to VDV

SAN JOSE, CA (Nov. 12, 2002)––The fastest growing segment of the electrical industry in Northern California, voice-data-video (VDV), now has its own web site, posted today as www.norcalvdv.org.


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Fiber Is Tougher Than You Think

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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Flood of Products Hits as VoIP Tide Breaks Strong

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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