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 2010 edition of NFPA 72, National Fire Alarm and Signaling Code, established a new and separate chapter for emergency communication systems (ECS), which continues to evolve.

In its basic form, commissioning means testing every device, process and procedure in an integrated systems solution to ensure the final specification operates as planned and according to the owner’s design. 


I have often described the reliability of a fire alarm system installation as dependent on four elements: design, equipment, installation and maintenance. I have also explained that the last two elements contribute the most to a fire alarm system’s operational reliability.


Around the turn of the century, horse and car race courses began expanding into the casino market. The result is the “racino,” a gambling and entertainment combo that needs the latest electrical infrastructure, backup power, low-voltage security and digital access. Chapel Electric Co.

More on Systems

 
What Vendors Offer in E-Commerce
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This is the second of three columns dealing with industry distributors and what they are doing on e-commerce.

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Understanding Wavelength
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Fiber optics is full of jargon but it’s important to understand it. One of the more confusing terms to many is “wavelength.” It sounds very scientific, but it is simply the term used to define what we think of as the color of light.

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Upholding Safety in Fiber Optic Installations
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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.

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Is FTTD Just Another False Alarm?
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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.

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Ensuring Standards-Compliant Structured Wiring
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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.

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

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Maintenance Involves Constant Upgrades and Replacements
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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.

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