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. 

The years leading up to 2016 were transitional for the security industry. As products and services continue to move to the cloud, the industry has been hard at work learning the morphing landscape and how to best approach the new wave of opportunity emerging from every front.

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.

More on Systems

 
The Importance of Systems Testing

When electrical contractors talk about (or are asked about) testing, one is usually not referring to the stress-inducing kind associated with obtaining the latest certification in the industry.


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Conductors Connected in Parallel
by Staff |

Parallel conductors are often installed where large ampacity feeders or services are used. Total understanding of the paralleling requirements permitted in the National Electrical Code is necessary before attempting to design a large electrical system or install these conductors.


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Planning a Fire Alarm System Installation

Developing a ‘specialty’ crew is important The fire alarm system installation for most new building projects inevitably is a Division 16 responsibility.


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The DER Niche Market

Electrical contractors working for utilities or interested in a growing niche market might do well to investigate opportunities in distributed energy resources (DER). They are parallel and stand-alone electric generation units located within the electric distribution system at or near the end-user.


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Article 210--Branch Circuits: Required Lighting Outlets, Part II

210.70 Lighting Outlets Required The National Electrical Code states its purpose as “the practical safeguarding of persons and property from hazards arising from the use of electricity.” [90.1(A)] The adequacy of the Code is covered in 90.1(B).


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Fuel Cells--Power Source for the Future

It has been three decades since fuel cell technology first emerged, but the clean and efficient power alternative is just now beginning to take off.


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Homeland Security: Contractors Vie for New Systems Installations

Without a shadow of a doubt, the events of Sept. 11, 2001, changed the world. Our understanding of what it means to feel safe and secure were forever altered.


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