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. 

Once a technician has spliced a fiber optic cable, he or she must test the splice to verify it is strong and has low loss. The technician must add the test data to the documentation for future reference and present it to the cable plant owner to verify the installation has been done correctly.


Tenant space in Denver’s Alliance Center is designed for solar DC-to-DC power.

The future of energy efficiency may be more than saving energy. It may also be efficient energy capture, storage and delivery. Technologists, engineers and some forward-thinking manufacturers are working to set a bigger table for direct current (DC), and one effort may be all-encompassing.

Energy consumer demand for distributed-energy resources (DER) is growing for a number of reasons—unexpected utility power outages, planned rolling blackouts, power quality problems, increases in power costs, etc.


The 2016 Profile of the Electrical Contractor reveals how electrical contractors see the industry changing and how they intend to adapt. Change occurs in the fire alarm and communications world as well. As you know, keeping up with these changes can prove difficult. 


More on Systems

 
Bosch L-Boxx insert tray
Cool Tools: Portable Containers

At one time, a toolbox was just a metal box. Then, plastic and composite materials came along. Whatever the material, it remained a box, perhaps with a pull-out tray to hold smaller items. But what about portable containers for accessories and supplies?


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We Need More Fiber

Recent columns have focused on what is happening with dark fiber, that which is being “lit” to become the backbone of the world’s communications systems. Dark fiber connects data centers, cell towers, cities, towns, governments and people.


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A New Frontier Of Sales

Are electrical contractors getting what they need online from their distributors? The answer, as it happens so often, depends on whom you ask.



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Common Ground To Break Ground

The dark fiber providers that most people are familiar with are private companies that were started to offer fiber connectivity for a profit. Today, there is a major movement toward building fiber networks as a public-private partnership.


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Phasor diagram and equivalent sinewave plots
Not So Infrequent

When considering power quality disturbances or the quality of the electrical supply, phenomena such as rms variations (sags, swells and interruptions), harmonics, unbalance and flicker usually come to mind.


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Tracking All the Data: Data Center Infrastructure Management

Data center infrastructure management (DCIM) software enables data center operators to manage assets and changes, plan capacity, and monitor power, environment and energy usage.


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The Code Is A Tool

We all use tools and test equipment to perform our daily work. Sometimes, it’s a basic hand tool, such as a screwdriver. Sometimes, it’s more sophisticated.


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