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. 

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.

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.


More on Systems

 
Boom or Bust?

Are there jobs for you in the nuclear power market? According to the World Nuclear Association, a recent study determined that nuclear energy incurs about one-tenth of the financial cost of coal to produce electricity.


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Circuit Breakers on Delta Circuits, Flexible Metal Conduits and More

CODE CITATIONS Article 100 Definitions Article 210 Branch Circuit Article 220 Branch Circuit, Feeder and Service Calculations Article 240 Overcurrent Protection Article 250 Grounding Article 310 Conductors for General Wiring Article 334 Nonmetallic Sheathed Cable; Types NM, NMC and NMS Article 404 S


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Here Comes the Sun

Outdoor solar lighting has a bright future With little fanfare, solar lighting systems are being installed on a growing number of projects, and lighting powered by sunlight has quietly evolved into a mature technology with widespread acceptance.


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Plenum vs. Non-Plenum

A minor decision that can prove costly Cabling choices are abundant; there are so many options these days that it is almost impossible to list them without leaving a few out.


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Are Epoxy/Polish Connectors Obsolete?

Low loss is still a big issue Terminating optical fibers by attaching connectors with epoxy adhesive and polishing the ferrules seems like an anachronism. That was how we started almost 25 years ago, so surely better methods have been developed by now.


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New Technologies Boost Data Center Operations

Speeding up the gigabit ethernet Two industry leaders (the Institute of Electrical and Electronics Engineers, or IEEE, and Intel) are working on a means to deliver information (or data) to the user faster, at rates of up to 10 gigabits per second (Gbps).


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The Abandoned Cable Dilemma

There’s money to be made, but hidden costs as well


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