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. 

In the past year, fiber optics underwent some important developments, some technical and some market-related. For those of you working in fiber optic network design and installation, the changes present opportunities and challenges.

This article is the first in a series that provides a step-by-step approach for performing arc flash calculations.
 Arc flash studies and software

I often give my power quality (PQ) 101 course to new engineers or salespeople. This introduction starts with the basics: an overview of PQ phenomena based on IEEE 1159 Table 4.2 followed by Ohm’s and Kirchhoff’s laws and how they apply to power quality.

We strive to protect building occupants, including our employees. Many years ago, the Occupational Safety and Health Administration (OSHA) formed to codify regulations in the area of employee protection.

More on Systems

Step One: Commissioning

In its basic form, commissioning means testing every device, process and procedure in an integrated systems solution to ensure the final specification operates as planned and according to the owner’s design. 

A Key Component of Reliability

I have often described the reliability of a fire alarm system installation as dependent on four elements: design, equipment, installation and maintenance. I have also explained that the last two elements contribute the most to a fire alarm system’s operational reliability.

Editors' Pick
Sure Bet at Dayton Racino

Around the turn of the century, horse and car race courses began expanding into the casino market. The result is the “racino,” a gambling and entertainment combo that needs the latest electrical infrastructure, backup power, low-voltage security and digital access. Chapel Electric Co.

Services beyond security

Safe And Sound In The Cloud

Not a day passes without reference to cloud-based or hosted services. Consumers use cloud services every day with online banking, and now mobile payment is infiltrating retail and hospitality services.

Conflict Resolution

I’m sure all of you have run into an issue such as this when installing a fire alarm system: One authority having jurisdiction (AHJ) wants one thing, and another AHJ wants exactly the opposite. What do you do? You can’t make both happy.

Come to Your Senses

Building-system-automation implementation has paved the way for sensor technology to make buildings more efficient, healthier and more comfortable for occupants.

Greenlee tools for copper VDV installations
Cool Tools: Copper Tool Kits

For installing alarm, surveillance and building control system copper wiring, technicians use many of the same tools as they do for placing data and communications networks.