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 outlook for solar-power project deployment continues to brighten, creating opportunities for electrical contractors. According to the Solar Energy Industries Association (SEIA), Washington, D.C., 2014 was a banner year for U.S. photovoltaic (PV) projects.

All of that dark fiber we have been discussing the last few months is getting used for some fast-growing applications, and the fastest may be connecting cell towers. Cell phones have evolved into mobile data devices. Smartphones and tablets consume vast amounts of data.

A hot summer’s evening usually begets long lines at the local ice cream shop. Recently, at one such shop, the line grew extra long when the cash registers and credit card machines mysteriously powered off and on.

Historically, if a problem occurs with a traditional string power inverter that links several solar panels together in series, or even simple shade, that issue can bring down an entire solar photovoltaic (PV) array.

More on Systems

 
Stationary Pump Installation, Grounding and More
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CODE CITATIONS Article 110 Requirements for Electrical Installations Article 250 Grounding Article 408 Switchboards and Panelboards Article 410 Luminaires (Lighting Fixtures), Lampholders, and Lamps Article 430 Motors, Motor Circuits, and Controllers

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Equipment Warning Signs, Remote Service Disconnecting Means and More
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CODE CITATIONS Article 110 Requirements for Electrical Installations Article 230 Services Article 240 Overcurrent Protection Article 310 Conductors for General Wiring Article 430 Motors, Motor Circuits, and Controllers Article 450 Transformers and Transformer Vaults Article 695 Fire Pumps Warning si

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Bonding Water Piping
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There is a quiet revolution occurring in the home-building industry. Traditional single- and multiple-dwelling construction methods as we knew them have changed forever. Metal studs are now often being installed in place of wood and steel beams in place of wooden trusses and joists.

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Analog to Digital Expands CCTV
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Digital video makes surveillance a snap. At your fingertips are control functions (pan-tilt-zoom, recording, etc.) and limitless remote monitoring options.

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TIA Approves Automation Standard
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In the March 2002 issue, I reported on the activity within the Telecommunications Industry Association (TIA) to develop a cabling system in support of building-automation systems (BAS). At the time of writing that article, the document was out for industry ballot.

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Choosing the Right Fiber Optic Cable
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Choosing the right fiber optic cable is extremely important for any installation. The purpose of the cable is to protect the fibers during installation and the service lifetime. Several types of cable are available.

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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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