Systems

 

 

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

 
The Mysterious dB of Fiber Optics

Whenever tests are performed on fiber optic networks, the results are displayed on a meter readout in dB. Optical loss is measured in dB while optical power is measured in dBm. Loss is a negative number (like -3.2 dB), as are most power measurements. Confused? Many fiber optic techs are too.


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Extreme Installations

Often an electrical contractor will be asked to install a fire alarm system in what some would define as a “harsh” environment. In these cases, the contractor must be ready to satisfy his or her customer’s request for an adequate, code-complying system.


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ECs and eBay

U.S. consumers fall into two camps: Those who have used eBay, and everybody else. Most of the first group—whether regular users or not—are fairly enthusiastic about the experience.


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Wireless Solutions: When Less is More

Times have changed and so has the hospitality industry. Nowadays, bigger is almost always better. Quaint bed and breakfasts may still exist, but most hotels have gone in the other direction. Just take a look around at any recent hotel or casino and you can literally get lost.


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Big Winner in the Casino Market

Casino work involves the deployment of state-of-the-art systems and solutions. When a gambling cheat enters a casino, he or she should face a daunting array of security.


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Equiping a Fiber Optic Installation Crew

Nowhere does the adage “the right tool for the job” make more sense than in fiber optic installation. The right tools can make installation easier, quicker, better and less expensive.


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Alternative Power Source Generation

Advances in small-scale generation technology coupled with growing environmental concerns, a changing energy market, evolving public policy and customer need for reliable and economical electric power supplies will provide a new growth market for electrical contractors.


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