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 October, I listed some of the significant changes proposed for the 2019 edition of the NFPA 72, National Fire Alarm and Signaling Code. This month, I cover more of the important proposed changes. Keep in mind that this is based on the public input stage.

Fluke’s laser distance meter

Measuring tapes are a basic and necessary tool. When the dimension to be measured is inaccessible, handheld, laser 
distance-measuring tools may be the only safe and practical solution. 
 There are many options today for taking measurements on structured-wiring projects.
 Laser measuring tools


Ferndale Electric Co., Ferndale, Mich., which employs an average of 130 electricians, performs electrical work for automotive plants, power plants, bottling plants and other industrial facilities. It also renovates electrical systems for lift bridges and completes major projects for airports.


Last month, I discussed making loss measurements with a light source and power meter—what we call optical insertion loss—and the causes of errors in those measurements.

More on Systems

 
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Defending Critical Infrastructure Against EMPs

United States’ military strategists have talked about the threat of an electromagnetic pulse (EMP) strike since the Cold War in the 1950s, 1960s and 1970s.


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A local microgrid in Sendai, Japan
Microgrids Expanding in the United States

One of the byproducts of the surge in renewable power and smart technology has been the expansion of microgrids. According to recent reports, the systems are expanding nationwide.


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Aquila in position prior to takeoff. (From left: Kathryn Cook, technical program manager for Aquila; Yael Maguire, head of Connectivity Lab; Mark Zuckerberg, Facebook founder and CEO; Jay Parikh, global head of engineering and infrastructure)
Facebook Tests a Solar-Powered Internet Drone

On June 28th, Facebook launched Aquila, a high-altitude, unmanned solar-powered airplane, for its first flight at Yuma Proving Ground in Yuma, Ariz. Although the team has been running tests and practice flights for months, until this point, only a 1/5th scale airplane had been tested.


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New options and customer markets

Winds Of Change Blowing Strong

At ISC West 2016, the security industry’s largest annual tradeshow, it was evident the winds of change are blowing within the category of physical security.



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The alternative

Choose Wisely: How Well Do You Understand Fire Alarm System Design

A good fire alarm system design becomes a function of how well you understand fire-protection principles as well as the requirements of NFPA 72, National Fire Alarm and Signaling Code, and NFPA 70, National Electrical Code (NEC).


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Integration Opens Doors

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.


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The 93XC OTDR is part of the Greenlee Communications family of fiber equipment.
Cool Tools: Fiber Testers

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.



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