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. 

Evolution in action


Much has been said and written about analog video cameras and the move to internet protocol (IP) networked digital surveillance. Some predicted the demise of analog and takeover by IP devices would progress quickly, but clearly that hasn’t happened.

A while back, I wrote about a house with 14 kilowatts (kW) of solar panels installed on the southern exposure roof. Voltage and current monitoring at the breaker panel prior to the solar panel installation had shown 10–12-volt (V) deep sags occurring as frequently as every 22 minutes.

A June 2016 report, "Market Data: IoT for Residential Energy Customers," published by Navigant Research, examines the global market for devices and services that are considered to be part of the residential "Internet of Things" (IoT), including forecasts for shipments, installed base, average sellin

United States’ military strategists have talked about the threat of an electromagnetic pulse (EMP) strike since the Cold War in the 1950s, 1960s and 1970s.

More on Systems

 
Is The World Ready For Biometrics?

Biometric technology has been in use for about two decades. It measures a person’s physical and behavioral characteristics, providing details that can be used to make more complete identifications.


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Compare And Contrast

For healthcare facilities, many states use only National Fire Protection Association (NFPA) 101, Life Safety Code, because it is the code that the joint commission references.


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New options and customer markets

Winds Of Change Blowing Strong

At ISC West 2016, the security industry’s largest annual tradeshow, it was evident the winds of change are blowing within the category of physical security.



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The alternative

Choose Wisely: How Well Do You Understand Fire Alarm System Design

A good fire alarm system design becomes a function of how well you understand fire-protection principles as well as the requirements of NFPA 72, National Fire Alarm and Signaling Code, and NFPA 70, National Electrical Code (NEC).


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Integration Opens Doors

The evolution of intelligent building system technology has triggered shifting roles for contractors and integrators, and the choices they make in their own specializations over the coming years can mean the difference between winning contracts and keeping customers or becoming less relevant.


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The 93XC OTDR is part of the Greenlee Communications family of fiber equipment.
Cool Tools: Fiber Testers

With the increasing use of fiber optic cable in structured wiring, many electricians experienced in low-voltage copper work are extending their skills to include fiber. Working with fiber requires training and the right tools and testers to correctly install and maintain fiber optic cable.



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Competitive Advantages Are Key

Since its humble beginnings in 1981, Metropolitan Electrical Construction in San Francisco has grown to a staff of almost 300 (250 field staff and 40 office employees) by ensuring that it can offer a number of competitive advantages to the marketplace.



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