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. 

As renewable power increases its market share, energy storage assumes a larger role. Recognizing the importance of government benchmarks, California lawmakers have taken steps to raise the state’s energy-storage standard.

J.M. Electrical Co., a Lynnfield, Mass., contractor with a specialty in advanced automation building system installations, recently completed project operations at the 85,000-square-foot Hanscom Air Force Base Middle School in Bedford, Mass., which holds 312 students.

This summer, New York-based Consolidated Edison (Con Edison) spent $1.6 billion to upgrade its delivery system, including 12 network transformers, 70 overhead transformers, 16 underground feeder sections, 37 overhead sections of power lines and reinforcement of 25 electric feeders.

Last month, I wrote about measurement uncertainty and metrology, the science of measurements. This month, I get more specific and cover the uncertainty of some basic fiber optic measurements, starting with optical power.

More on Systems

More For Your Money: Power Quality Monitors

With the fifth generation of power quality monitors comes more parameters, features, communication modes and, for some users, challenges getting the answers that they want from the instruments.

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

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.

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.

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?

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. 

Supercharge Your Specs

The market for electronic access control continues to grow. It’s a sign of an ongoing upturn in future specifications. A big opportunity resides in one- to 10-door systems because these openings still may have traditional mechanical locks.