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 North Carolina, on July 27, PCL Civil Constructors working on the Herbert C. Bonner Bridge project, which spans 2.8 miles and is the only connection between Hatteras Island and Bodie Island, severed a three-phase, 115-kilovolt underground transmission line.

Capacitors that blew up from a power supply failure

In my 40-plus years in the industry, I have analyzed customers’ power quality monitor data files and heard their stories about hundreds of things that have happened in their facilities or homes: some mysterious, some catastrophic, some even comical.

According to an August 3 report from the U.S. Energy Information Administration (EIA), as of July 2017, 30 states plus the District of Columbia have adopted energy efficiency policies. These policies range from mandated requirements to voluntary goals, as well as pilot programs.

Wire and fiber. Rigid and flexible raceways. Twisted copper wire and category (Cat) cable. Welcome to a new world where traditional power and low voltage meet. For some electrical contractors, their shops reflect this confluence. For others, it may be on the horizon.


More on Systems

 
Controlled Chaos: Stata Center

When Massachusetts Institute of Technology (MIT) considered construction of The Ray and Maria Stata Center for Computer, Information, and Intelligence Sciences, the facility committee wanted something bold.


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Integration and Potential

In the past few years, there has been a great deal of buzz over integrated systems and this issue is dedicated to that new way of construction. The terms and their abbreviations used in this market sector are often interchangeable.


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Hot Developments in Remote Monitoring

Modern technology makes it possible that whatever is detected can be electronically reported, and whatever is reported can be remotely monitored, and whatever is remotely monitored can be remotely controlled.


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Terminal Grounding

Isolated ground receptacles are installed for the purpose of reducing electromagnetic interference on the grounded conductor.


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Restoring Networks

In outside plant fiber optic installations, the biggest cause of network failure is what we call “backhoe fade,” which is pretty self-explanatory.


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FTTD: Bring the Future to Your Desk

Moving your network into the future takes time, initiative and planning. But most of all, it takes knowledge. Both the installer and the end-user need to understand what is available and what is feasible.


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PoE May Equal "Big Mo" for Contractors

How about this: Under IEEE Standard 803.2af, power can be run via datacomm cable. It's called “Power over Ethernet” (PoE). For many electrical contractors, PoE could turn out to be the greatest development in world history. But wait: Maybe it's not all that remarkable.


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