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

 
Intrusion Detection for Secure Networks

On the scene to protect vital data for hotels, casinos and more Intrusion detection systems (IDS) are some of the new kids on the secured-computing block. While these network-based systems are on the rise, they are still misunderstood and not used nearly enough.


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Expanding Your Knowledge Base

Use the Web to keep up with the latest information Most fiber optic installers get started by taking a short class or seminar that covers the basics. That usually means a half-hour lecture each on fiber optic technology, how it is used for networks and the various components.


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Control Systems

Getting the most out of your system An important characteristic of an intelligent building is its ability to sense ambient conditions and react to them.


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Are Laundry Areas Habitable Rooms?

Dedicated 20-ampere branch circuits are required Most dwelling units are required to have a laundry area within the living area or have a laundry area provided on the premises for a multifamily building.


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SuperBAS Will Rule Buildings

Brainy Building Automation Systems are Coming Isaac Newton didn’t need an apple to fall on him to come up with his first law of motion: Unless acted on by an outside force, a body in motion tends to stay in motion.


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A Colorful History

NEC’s conditional requirements have evolved There are several conditions under which the National Electrical Code requires or permits conductors to be identified by the color of their insulation.


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Getting Friendly with C-STAR

Manufacturers, NECA, and IBEW work on certification Since C-STAR is set to make its debut soon, it is time to take another look at the comprehensive certification for low-voltage systems installers.


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