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. 

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.

As data about home energy use expands, the next big thing could come from new products and services companies create to analyze and use that data.

More on Systems

 
Wireless Sensors Testing Facility Begins Collecting Data
by Staff |

According to the Associated Press, the growth of wireless sensor networks presents the possibility of connecting people with physical locations and conditions in the same way the Internet connects people with computers.


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Coexistence in Connectivity

Making a place for fiber alongside UTP:


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Never Dull

Blade servers are new area of interest for contractors:


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Fire Alarm System Upgrades

New technologies add layers of safety and security


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Steel Conduit Holds Steady

Benefits continue to follow product:


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