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. 

Most in the construction industry should be familiar with building information modeling (BIM).

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.

More on Systems

 
Don't Cut the Landline

It is no secret that voice over Internet protocol (VoIP) has had problems regarding emergency service. Users’ exact locations are not always known, causing 911 calls to be transferred to the incorrect dispatcher. Many users were unaware that when they dialed 911, it would not always work.


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Seeing (and Hearing) Is Believing

Over the last few years, there has been confusion over which laws or codes apply to the audible and visible notification appliances.


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Ghost Busters

The optical time domain reflectometer (OTDR) has been an important tool for fiber optic testing and troubleshooting since its invention 25 years ago. We have discussed this several times in this column and in other Electrical Contractor articles, so I hope you are already familiar with them.


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Residential-Specific LEED

Although the construction industry has been dealing with green buildings and sustainable design for quite some time, there is a new entry into this residential market arena: LEED for Homes (LEED-H).


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The Contractor's Responsibility

Contractors who have developed their fire alarm system maintenance and testing business and specialize in the retrofit markets have already seen the financial benefits associated with these specialized businesses.


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Hardware-Based Firewalls

Most contractors opt out of networking projects when terms, such as “network security,” “firewall” and “software,” start getting thrown around. But, that may not be the best move to make, as network security is a niche market where contractors could easily profit.


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LANs Contractors Can Install
by Staff |

In today’s technologically advanced society, nearly every new commercial building has found a way to incorporate the computer revolution into its design.


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