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

 
The ZigBee Buzz

ZigBee is the name OF a new open-architecture wireless personal area network (WPAN) technology designed for linking devices that perform a monitoring and control function.


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But They Changed Inspectors!

I enjoy working in the field. Providing construction oversight services for our clients gives me the opportunity to see the results of our designs and evaluate whether the contractors clearly understood our specifications.


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The 'New World' Challenge

Sept. 11, 2001, changed our lives forever. Since then, we have experienced additional security measures in all areas of our lives. According to the 9/11 Commission Report, “Private-sector preparedness is not a luxury; it is a cost of doing business in the post-9/11 world.


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A Bright Future? BPL Today

According to what I hear, broadband over power lines (BPL) is either a winning or losing technology. It started as a winner because it was positioned as a cheaper alternative to provide high-speed, broadband Internet access to homes and businesses by using the existing power grid infrastructure.


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Is the Customer Always Right?

Most customers for fiber optic installation expect the installer to be more knowledgeable about and experienced with fiber optics than they are.


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'I Always Do Class A Work!'

“I always do class A work!” That was the answer I got when I asked the fire alarm system contractor whether or not he had wired the system in a Class A fashion.


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Great Heights

Project managers at Baker Electric knew in 2001 that powering Des Moines’ new world-class sports and entertainment campus would be a major event.


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