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. 

There is an old saying that liars figure and figures lie, which implies that the truth can be a challenge to discern from both people and data. At a recent standards-making conference, I encountered some examples of this concept that seemed worth sharing.

For electrical contractors with a low-voltage or security division—or for any company involved in physical security and surveillance—keeping pace with new technology is one of the greatest challenges.

When I entered the business, I “sold” fire alarm systems. Codes at the time had begun to require that such systems be installed in some occupancies.

In its paper, “Intelligent Efficiency: Innovations Reshaping the Energy Efficiency Market,” Greentech Media notes that efficiency is an untapped energy resource that is already embedded in every commercial building, manufacturing facility and corporate campus.

More on Systems

What Vendors Offer in E-Commerce

This is the second of three columns dealing with industry distributors and what they are doing on e-commerce.

Upholding Safety in Fiber Optic Installations

Regarding safety in fiber optic installations, the first thing that comes to mind is usually eye damage from laser light in the fiber. People imagine a laser burning holes in metal or perhaps burning off warts.

Is FTTD Just Another False Alarm?

Well, we’ve heard it all before—fiber to the desktop (FTTD) is on its way to becoming the power source of choice. While unshielded twisted pair (UTP) cabling has been dominant, there is reason to think fiber will be a true competitor soon.

Ensuring Standards-Compliant Structured Wiring

With the convergence of voice/data/video (VDV) applications within both the commercial and residential ectors, electrical contractors are now faced with becoming information technology professionals in addition to being electricians.

Refrigerator Branch Circuits, Machine Tool Wiring, Foreign Piping and More

CODE CITATIONS Article 110 Requirements for Electrical Installations Article 210 Branch Circuits Article 250 Grounding Article 310 Conductors for General Wiring Article 404 Switches Article 408 Switchboards and Panelboards Article 670 Industrial Machinery Branch circuit for refrigerator in dwelling

Maintenance Involves Constant Upgrades and Replacements

Voice/data/video (VDV) cable plant has become the central nervous system of the customer’s business. It is necessary for producing and delivering your customer’s products and services.

Wireless LANs: Mobility at Ethernet Speed

IEEE 802.11 provides platform for new applications When the concept of the wireless local area network (LAN) was introduced more than 20 years ago, numerous companies tried to implement its applications through the use of spread spectrum, infrared and narrowband microwave technologies based on twist