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

 
Getty Would Be Proud

CLIFF EDGES THE PORTION OF THE PACIFIC COAST HIGHWAY that threads its way along the ocean from Santa Monica to Malibu, Calif. Nestled in a canyon on that cliff sits the Getty Villa, a museum built in 1974 by oil tycoon J.


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Establishing Connections

Will plastic fibers challenge glass for networking? PLASTIC OPTICAL FIBERS (POF) have been around as long, if not longer, than glass fibers. We are all familiar with them, as they are used for consumer items such as signs, lamps and Christmas trees because they are inexpensive.


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Connectivity and the Changing World

Looking to the future and new applications THE WORLD OF OUTSIDE CONNECTIVITY IS CHANGING. This time, it is the relationship between copper and fiber-optic cable outside of our homes that is in flux.


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Aliens Abduct Category 6 (Augmented Cat 6)

Cabling gurus have been working feverishly to develop an unshielded twisted pair cable (UTP) that will support 10 gigabit Ethernet (10GbE), but it has not been easy.


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Integrated Automation

Controlling safety and comfort from one unit The electrical contracting firm’s core business typically includes Division 26/Electrical of the Construction Specifications Institute’s (CSI) 2004 edition of the MasterFormat that specifies the requirements for a facility’s power distribution and lighti


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Fire Awareness and Extinguishers

Do you know what’s in your extinguisher?   FIRE CAN OCCUR ANYWHERE AT ANYTIME. Electricians must be prepared to respond. The Occupational Safety and Health Administration (OSHA) requires an appropriate fire extinguisher be available on the job site.


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Priority Shift

Ten success tips for the professional contractor IN ANY PROFESSION, there are always tips for success. Something as simple and seemingly insignificant as your own attitude can mean a lot to production.


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