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. 

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. 


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.

More on Systems

 
Using System Smarts to Your Advantage

End-users can monitor events and plan responses Standard “tools” in current security and low-voltage equipment and peripherals allow installing contractors to more accurately pinpoint events so the end-user can plan an appropriate response.


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Choosing Testing Equipment

Price and preference play a part The feeling of satisfaction you get when a project is complete, is accompanied by one of accomplishment, whether it’s your first installation or your thousandth.


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Terminal Markings in a Panelboard and More

Article 210 Branch Circuits Article 250 Grounding Article 300 Wiring Methods Article 404 Switches Article 408 Switchboards and Panelboards Article 430 Motors, Motor Circuits and Controllers Article 527 Temporary Installations Also mentioned are the General Information for Electrical Equipment Direct


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Connector Types and Terminology

Where did these terms come from? Rarely do I present a fiber optic seminar without getting some questions on what some connectors terminology means, and often I’m questioned on how such a term originated.


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Building Bytes

As your “Online” correspondent, I try to track trends in electronic business, Web sites and more. In February, I journeyed to Orlando for the A/E/C Systems show, the only conference geared to construction computing. Here’s a quick look at what I saw and heard.


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ACknowledge

Brush up on what the NEC says about air conditioning During the hottest parts of the summer, most people do not notice the sound of air conditioning units turning on and off, but if a unit fails to start, the effect is noticed immediately. Comfort becomes a premium to be restored at all costs.


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Double Duty

Using fire alarm systems for special applications Fire protection designers may use fire alarm systems for special applications in many building and fire protection scenarios.


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