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. 

My January 2015 article, “It’s Just Math,” explained how various parameters used to evaluate power quality (PQ) are derived while avoiding formulas and other mathematical expressions.

Electrical contractors (ECs) are bearing witness to dramatic changes in the physical security industry. Everything is moving to the network. Customers connect to systems and services with smartphone apps.

In my 40-plus years in fire protection, I have learned that electrical contractors (ECs) sell and install the lion’s share of fire alarm systems in medium- to large-size buildings. Most of these contractors also finish the installation, pass the acceptance test and move on to the next project.

There is no question today’s fire alarm systems are more complex than they were 20 years ago. More panels are addressable, which means programmers, installers and inspection and testing personnel need to be better qualified.


More on Systems

 
More Secrets To Share: Achieving (Splice) Closure


For several recent columns, I have been writing about splicing optical fibers. Last month, I covered managing fibers inside the splice trays and closures. But there is even more to know about splice closures.



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Well Wired: Growing Demand for Wiring and Cabling Installation

Demand for wiring and cabling is expected to grow in the months and years ahead. Low-voltage applications for light-emitting diode (LED) technology and fiber optic cabling within the power-generation and telecommunications industries will help drive this market.


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'Good Enough': Finding the Right PQ Monitor

At a recent meeting, a comment was made that many power quality (PQ) monitor users purchase equipment that is just “good enough.” PQ monitors can be a significant capital equipment purchase for some companies, particularly smaller electrical contracting firms.


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Power to the People: HVDC Brings Renewable Energy Into the Mainstream

In the early days of electrical generation and transmission, much hullabaloo was made over the respective value of alternating current (AC) versus direct current (DC) technology, and the reigning geniuses of the 1880s, Nikola Tesla and Thomas Edison, waged a metaphorical war over the issue.


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Under Your Feet: Fiber Goes Underground

The continuing deployment of fiber optic cable is newsworthy in industry trade publications and the consumer press. Serious home-internet users want more bandwidth to download, upload and stream online video.



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Streamlining the System: Ensuring LED Application and Driver Compatibility

In today’s fast-paced and rapidly evolving light-emitting diode (LED) market, the subtle and sophisticated decisions involved in choosing and installing an LED system can be difficult enough.


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Appeals Court Upholds FCC Net Neutrality Regulations

The Federal Communications Commission’s (FCC) fight for net neutrality got another big boost on Tuesday, as the Washington, D.C., federal appeals court upheld the FCC’s Open Internet rules in a 2–1 decision.


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