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 projects become more complex, electrical contractors need high-tech management methods to ensure more efficient results. Here are just a few examples to help you get headed in the right direction. 5pm

The dark fiber providers that most people are familiar with are private companies that were started to offer fiber connectivity for a profit. Today, there is a major movement toward building fiber networks as a public-private partnership.

Phasor diagram and equivalent sinewave plots

When considering power quality disturbances or the quality of the electrical supply, phenomena such as rms variations (sags, swells and interruptions), harmonics, unbalance and flicker usually come to mind.

Data center infrastructure management (DCIM) software enables data center operators to manage assets and changes, plan capacity, and monitor power, environment and energy usage.

More on Systems

Contractors Needed for Biometrics

Over the past few years, the biometrics industry has experienced significant activity, resulting in myriad new applications as the demand for these products has increased. This trend is still on the rise, going full speed ahead.

Motor-Operated Appliances

Article 422 of the 2002 National Electrical Code covers electrical appliances used in dwellings, commercial facilities and some industrial installations. Many appliances utilize only electrical power.

Zone Cabling

It’s obvious that fiber optics is not copper wiring. Advantages of fiber include the capability of going longer distances at higher speeds, plus immunity to electromagnetic radiation. These advantages overcame its cost disadvantage and made it the cabling choice for telecommunication and CATV.

Security System Cabling

Because we all want to feel safe and secure, the prevalence and necessity of security systems has always been a driving factor in business and industry. The tragic events of Sept.

Monitoring Systems Remotely

Advances in technology have made the remote monitoring of commercial building systems both possible and economical.

Can You Buy at Auction?

January’s column discussed how companies that hire construction contractors are using reverse auctions to drive prices down. It is electronic bid-shopping with a sophisticated veneer. Can you use reverse auctions to buy material or services? First, reverse auctions are not a good way to buy.

Emerging VDV Applications

Technology convergence means practical solutions A fiber optic system guards Naval operations on the Atlantic coastline. A corporate executive shoots video and transmits the live images instantly, across the country.