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. 

Damaged dog-fence power source

Lightning is the biggest cause of damage and destruction of electrical and electronic equipment in industrial facilities, commercial buildings and homes, as stated in the 2008 report by the U.S. National Lightning Safety Institute.

Historically, security system installations have only mandated acceptance testing as the last requirement for a project to be deemed completed.

Energy costs and potential energy shortages are increasingly driving commercial building and industrial facility owners to find ways to use less energy for the same level of activity.

I suspect that the idea of employing anaerobic adhesives for fiber optics came from someone using Krazy Glue or the two-part adhesive made to fix a car’s rearview mirror after it fell off in the hot summer sun.

More on Systems

 
Cat-Scratch Fever
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Last month, I discussed the evolution of PC networks to Ethernet over twisted-pair cables. Toward the end of the 1980s, the IEEE created a new standard for Ethernet called 10Base-T, which means 10 megabits per second (Mbps), baseband (AM, not FM) over unshielded twisted-pair (UTP) copper cable.

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Have I Got A Deal For You!
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Reading through the websites and marketing Material of the major power quality instrument manufacturers in the hopes of figuring out which power quality monitor to buy can leave one feeling confused, frustrated and wondering which way to turn.

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Disaster Strikes
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Despite the threat of disasters, many people fail to develop emergency plans. It often takes experiencing a disaster to recognize the need for a contingency plan, but electrical contractors can suggest such plans to their customers before calamity strikes.


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Fight the Power: Notification Appliances
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I receive questions and stories about installer experiences with code-compliant fire alarm systems in the field, many relating to issues about the use, application and installation requirements of visible and audible notification appliances.

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Analytics of Surveillance
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Cameras aimed at customers moving through store aisles can provide a lot more than security. Retailers have become technically savvy and hungry for data about their customers’ behavior and habits, which is information that, until now, has given online retailers an edge.

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Compare And Contrast: NFPA Codes
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In my last column, I discussed the ICC code process. This month, I look at the NFPA process. As I previously mentioned, the ICC and NFPA have completely different processes for codes and standards development. Yet, both operate on three-year cycles.

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Looking At Big Data
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Big data, that slightly overwhelming concept where staggering amounts of information are gathered and analyzed in search of useful data nuggets, continues its creep into the building automation market.

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