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 years leading up to 2016 were transitional for the security industry. As products and services continue to move to the cloud, the industry has been hard at work learning the morphing landscape and how to best approach the new wave of opportunity emerging from every front.

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.

More on Systems

 
Generators and GFCI, Pool Wiring, Inspection Questions and More

CODE CITATIONS Article 225 Feeders Article 230 Services Article 250 Grounding Article 408 Switchboards and Panelboards Article 445 Generators Article 680 Swimming Pools, Fountains and Similar Installation Systems NFPA 20 1999 Standard for the Installation of Stationary Pumps for Fire Protection Grou


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Intelligibility--What Did You Say?

How many times have you been to a large corporate complex and struggled to hear an announcement on the public address system? Now consider the same sound system and the dangers when the listener is instructed in emergency evacuation procedures.


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Smarter Distributed Controls

Imagine being on summer vacation in Australia while it's mid-winter back home in Boston. Your neighbor has kindly agreed to feed your exotic fish while you're away for three weeks, and you know she'll be visiting every morning and evening.


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Put the Web to Use

As the Internet progressed from "new" to standard operating procedure, the electrical and VDV construction industry has embraced the Web. Few may be buying online, but many industry people use it. Perhaps you might save time by using the Web to better effect.


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Highlights on New Category 6 Standard

The Telecommunications Industry Association (TIA) has published its long-awaited standard for Category 6 data cabling and components. Officially known as ANSI/TIA/EIA-568-B.2-1, the standard is an addendum to the TIA/EIA-568-B standard for commercial building telecommunications cabling.


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IT Decision Makers Prefer Category 6, Survey Says

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


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Fiber's Biggest Enemy

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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