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. 

Splicing safety mostly follows the same guidelines installers use when installing any fiber optic cable plant. However, there are some special issues to be aware of.

My January 2015 article, “It’s Just Math,” explained how various parameters used to evaluate power quality (PQ) are derived while avoiding formulas and other mathematical expressions.

Electrical contractors (ECs) are bearing witness to dramatic changes in the physical security industry. Everything is moving to the network. Customers connect to systems and services with smartphone apps.

In my 40-plus years in fire protection, I have learned that electrical contractors (ECs) sell and install the lion’s share of fire alarm systems in medium- to large-size buildings. Most of these contractors also finish the installation, pass the acceptance test and move on to the next project.

More on Systems

 
On the Bandwidth Wagon

It is common knowledge that fiber optics has much more information-carrying capacity than copper wiring, mostly due to the fact that fiber optic suppliers have been touting the bandwidth advantages of fiber for so long.


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VoIP Basics

For traditional burglar alarm installers dealing with intrusion detection and monitored systems, it came as no shock that voice over Internet protocol (VoIP) was not the end-all and cure-all it was originally purported to be. But that’s the reality of emergency communications in some instances.


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More Than It Used to Be

The Technical Committees that oversee the development of the National Fire Alarm Code, NFPA 72-2006, have started the cycle for processing proposed changes.


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Smarty Pants

Access control is a logical product to integrate. Technology continues to advance, especially in networked solutions, smart cards and biometrics, offering new capabilities and more application possibilities than ever before.


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Uninvited Guests

Network vulnerability problems often fall on the shoulders of information technology staff members and systems administrators.


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The Perfect Connection

A few years ago, a cohort and I were demonstrating fiber optic terminations in our booth at the NECA show. He came back from visiting another booth with a large twist-on wire connector, commonly called a “Wire-Nut,” the Ideal trademark for these devices.


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PV Economics

Performing a preliminary design for a photovoltaic (PV) system is the first step in deciding how to effectively incorporate PV technology into a new or existing building.


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