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. 

If you buy a new car in 2040, there’s a better than 50/50 chance it will be powered by electricity rather than gas.

Electronic access control is one of the most proprietary technologies (beside fire alarms) with the largest installed base of legacy equipment in the physical security industry.

Since 1999, the National Fire Alarm and Signaling Code has required survivability for certain circuits that need to work during a fire. In truth, the code has always required speaker circuits serving emergency voice/alarm communications systems to meet a performance requirement for survivability. 


Figure 1: Special manual building evacuation station. Photo courtesy of Jensen Hughes Inc.

Recently, a number of inquiries were made to our office regarding the topic of delaying or preventing the activation of fire alarm notification appliances.

More on Systems

 
A More Connected Tomorrow: Home Devices

When a dead body was discovered in a hot tub in Bentonville, Ark., in late 2015, detectives looked for forensic evidence in uncommon places.


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Sensory Overload: BLE Indoor Positioning Systems

Just as building intelligence systems draw information about a building’s environment to help manage the facility’s efficiency and comfort, a low-cost sensor system is piggybacking on that trend, and it offers new opportunities for contractors.



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Figure 1: Power quality phenomena over the voltage range
Put A Label On It: An Introduction to RVC


The lights blinked for an instant, or a running appliance made a sound like the motor was slowing down. No digital clocks were blinking, no computers restarted, no production lines stopped.


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Security Threats And Vulnerabilities

Security systems solutions are designed to keep customers and their facilities safe, detect intruders, and obtain visual evidence and identification.


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The Real Reason We Test Fire Alarm Systems

Many contractors have said to me, “The fire alarm system is supervised, and I have a green light on the fire alarm control unit.


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Team Develops Streetlight Diagnosing Software, Wins Smart Cities Hackathon

A new piece of software developed by students will make streetlight outage detection a lot easier and faster for the City of Las Vegas.


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Real Opportunities: Trillion Dollar Infrastructure Project

In any industry, those who are connected get the jobs (no pun intended). It’s no different in the electrical construction industry. If you are reading this column, you are already part of the “in crowd” (Intelligent Infrastructure Insights).


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