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. 

Brady BMP21-Plus label printer

Making labels on the job site can be a time-consuming task for integrated systems contractors, but it can pay big dividends in the long run.


In the last issue, I wrote about the practice of splicing two fibers with a fusion-­splicing machine. This month, I discuss some secrets that experienced splicers have learned—often the hard way.


Figure 1: Notching caused by semiconductor-controlled rectifier switching during commutation period

Maybe it is because they are rarely seen by the human eye or because the proliferation of surge protector strips makes everyone feel immune, but transients still exist and can wreak havoc with electrical equipment.

With cities and utilities worldwide upgrading to light-emitting diode (LED) lighting for streets and outdoor areas, owners and installers wonder when they 
will build in the controls for smart-city applications.

More on Systems

 
My System is Survivable (I Think)

Designers, contractors and authorities having jurisdiction often misunderstand the term “survivable.” They presume it means the installer has chosen to use either a Class A wiring scheme or has placed the circuits in metal raceway.



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New Perspective On Power

For security and life safety systems, reliable, high-quality power solutions are critical. Intrusion detection, access control, video surveillance, mass notification and fire systems count on superior uptime and 24/7 availability, which means consistent, dependable power.



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Klein Tools ratcheting modular crimper
Cool Tools: Copper Crimping Tools

Crimping tools are routinely used to make connections that meet industry standards for both electrical and voice/data/video (VDV) installations of video surveillance, alarm and building control systems.



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What’s New for Fire Alarms in 2015, Part 2


In my last article, I reviewed changes to fire alarm requirements for the occupancy classifications in the 2015 International Building Code (IBC). This month, I review changes to the general fire alarm requirements as well as the new section on carbon monoxide (CO) detection requirements.


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A Courageous Group

Intrepid Electronic Systems operates from two locations in California—Oakland and San Jose—with 25–35 employees at each location. Founded in 1997, the company focuses only on low-voltage systems. 
 “I have been doing this kind of work myself since 1976,” said Kurt Brinkman, owner.



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Bigger Data

The evolution of data center technology is outpacing changes in nearly every kind of commercial building, making the data center installation and service market lucrative. However, it comes with plenty of challenges.


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Lighting Up Dark Fiber

Last month, we looked at how dark fiber is tested to determine its capability of supporting newer, faster transmission networks. Once dark fiber has been tested and its usability confirmed, communications systems can be connected.



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