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. 

Figure 1: Power quality phenomena over the voltage range

The lights blinked for an instant, or a running appliance made a sound like the motor was slowing down. No digital clocks were blinking, no computers restarted, no production lines stopped.

Security systems solutions are designed to keep customers and their facilities safe, detect intruders, and obtain visual evidence and identification.

Many contractors have said to me, “The fire alarm system is supervised, and I have a green light on the fire alarm control unit.

A new piece of software developed by students will make streetlight outage detection a lot easier and faster for the City of Las Vegas.

More on Systems

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2017: The Year For Infrastructure

With the new presidential administration coming into the White House, will this be the year of advancing infrastructure? Will there be a diversified trillion dollar infrastructure project to jumpstart the economy as well as fill your schedules and your wallets?

Supergrids: The Next Electric Grid Trend?

Much as been written about microgrids recently, suggesting that, more and more, the electric grid's distribution system will become more isolated and self-reliant.

Energy Storage Disrupting U.S. Transmission Infrastructure

Transformative technologies have almost become the new norm in the age of digital communications and renewable power. For example, consider the impact of cell phones, Wi-Fi, the internet, wind and solar power, and electric vehicles on the industries, markets and consumers that have adopted them.

Q&A: The Growing Relationship Between ECs and Controls

As seen in the 2016 Profile of the Electrical Contractor, available at, electrical contractors continue to get involved in controls work. This includes a significant increase in heating, ventilating and air conditioning (HVAC) controls work.

Microgrids Could be Ideal for Military Bases

According to a report published by The Pew Charitable Trusts in January, the U.S. Department of Defense (DOD) could save hundreds of millions of dollars annually, and improve base security and reliability, by installing more microgrids and renewable power systems.

All Eyes On Video: A Look at Drones, Analytics and Surveillance 

The new year is upon us. For electrical contractors that continue to add low-voltage security to their operations, there is a light shining brightly on what can really boost the overall future stability and profitability of a company, and that’s the category of video surveillance.

Predicting Change: Staying Aware of New (Even Unenforced) Codes

Regardless of the changes in our federal government this year, there is one thing we know for sure: we have a new NFPA 72 2016, National Fire Alarm and Signaling Code from the National Fire Protection Association. Does that mean we should have started using the new code on Jan. 1?