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. 

Waveform with harmonics: 8 percent of fundamental for the 2nd harmonic, 18 percent for 3rd, 10 percent for 5th, 5 percent for 7th, 2 percent for 9th
by
Staff  

There was a recurring topic at the summer meetings of the IEEE Power Quality Subcommittee’s various working groups and task forces, and it came to a head at a panel session on the latest version of IEEE 519 2014, IEEE Recommended Practice and Requirements for Harmonic Control in Electric Power Syste

Moving to upstart revenue streams and mobile, remote systems management is the way smart, low-voltage electrical contractors are doing something about the changing security and integrated systems market.

Recently, I came across some research that could be a useful tool. In August 2016, Security Sales & Integration (SSI) published its annual Operations and Opportunities Report, which reveals key trends in the security dealer and integrator market.


The market for data centers is growing. It is being driven by many factors, including big data, the Internet of Things (IoT), cloud computing and intelligent computing that data centers make possible.

More on Systems

 
Arcing Short-Circuit Current

This article is the second in a series that provides a step-by-step approach for performing arc flash calculations. The first part, “A Calculated Introduction,” appeared in the January 2016 issue of ELECTRICAL CONTRACTOR.
 Arcing short-circuit currents



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Operating in a Wireless World

Wireless power management is on the rise. With its choice of closed or open systems, customers expect seamless performance. The electrical contractor (EC) that understands the two wireless approaches can recognize the benefits of each, ably work with a design team and better advise the client.


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What's Driving EVs?

Five years ago, as plug-in electric vehicles (PEVs) began hitting the road in numbers, U.S. gasoline prices were running around $3.50 per gallon and heading upward, and automakers saw a great market opportunity for cars that granted their drivers independence from the gas pump.


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Project challenges for Advent Systems included dealing with the sound reverberations caused by the diagonal lines and peaked center of the ceiling.
Heavenly Voices: Advent Systems, Soundworks System Integrators

Churches are designed to be places of worship. Pastors deliver sermons. Congregations pray, sing and clap. It’s a simple setting with a simple purpose. What can go wrong?



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Know The Facts: Residential Smoke Alarms

Each year, the National Fire Protection Association (NFPA) publishes fire statistics. Residential typically leads all other occupancy types in fires, injuries and deaths. However, since the advent of the residential smoke alarm, residential fire deaths have fallen by more than 50 percent. 



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The State Of Video Verification

The art and science of using video to confirm the status of alarms detected at a protected premises continues to improve with affordable technology and an updated standard set for release as early as the end of this month.



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Help!

Are You Ready to Compete: Strategic Planning

We never have enough time in our daily lives, but do you ever stop to think about where you want to be in the future? Strategic planning is important for personal and corporate growth. It will help you determine the types of training programs you and your staff need to meet your goals.



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