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. 

Brady BMP21-Plus label printer

Making labels on the job site can be a time-consuming task for integrated systems contractors, but it can pay big dividends in the long run.


In the last issue, I wrote about the practice of splicing two fibers with a fusion-­splicing machine. This month, I discuss some secrets that experienced splicers have learned—often the hard way.


Figure 1: Notching caused by semiconductor-controlled rectifier switching during commutation period

Maybe it is because they are rarely seen by the human eye or because the proliferation of surge protector strips makes everyone feel immune, but transients still exist and can wreak havoc with electrical equipment.

With cities and utilities worldwide upgrading to light-emitting diode (LED) lighting for streets and outdoor areas, owners and installers wonder when they 
will build in the controls for smart-city applications.

More on Systems

 
Alleviating The Fear Of Fiber

Some cabling industry stakeholders predict the imminent death of copper cabling, while others disagree. However, most agree that fiber optical networks are taking a large bite out of the new network market.



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Test Before Use

Last month, we discussed “dark fiber” and how most outside plant installations include more fibers than are needed at the time of installation. Later, those fibers will be used for expanding service capacity or leased out to provide income.


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Internet of Everything

Our Houses—or, at least, the houses of the tech-savviest among us—are getting closer to running autonomously. Now, it’s not just that you can open your garage door or turn on your living room lights from a smartphone app.


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Higher Security Access Control

Do you have a customer that requires additional access control at specific locations within their facility but no budget for a total rip and replace? Maybe they are concerned with hacking or data compromise.


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New Kid On The Block

The categories or labels used to describe the plethora of power quality phenomena that can occur on electrical systems have not changed much in the past decade or two. Measurement methods and acceptable limits for most systems have changed.


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Control The Risk

Electrical systems have posed hazards since they were introduced more than 100 years ago.


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Dark Fibers Lie In Wait

“Dark fiber” is a term often heard in conversations about fiber optic communications. Perhaps this is because it has a name that sounds evil or nefarious. But dark fiber is just fiber that has been installed and is not currently in use; instead, it is reserved for spares or future use.



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