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

 
Making the Grade
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A system assessment is essentially a comprehensive overview of the structure, layout and functionality of any given system. In the world of electrical contractors, we are more often than not referring to networking systems, even though the same methodology applies to electrical systems.

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NM Cables Installed in Temporary Installations
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Article 305 for temporary wiring in the 1999 National Electrical Code has been relocated to Article 527 covering temporary installations in the 2002 NEC.

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Help Is On the Way
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Look for a new fiber test bulletin (not a standard) from the Telecommunications Industry Association (TIA ) in 2003. We all know fiber is looked at as more difficult to work with, so maybe that is why a new guidance bulletin is coming out that better describes fiber testing in the field.

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Opportunities and Challeges Continue to Grow in the Fire/Life Safety Systems Market
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The estimated installed market value of fire alarm systems in commercial facilities is valued at nearly $3.3 billion. It is estimated that systems installers account for more than half of this market value (55 percent). This information is based in part on the “U.S.

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Who Watches the Watchmen?
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Backing up your backups—aka redundancy—is critical Having backup for the backup to the backup is the only way to go in power and systems. For the healthcare market, which provides critical and comprehensive care 24/7, it’s a necessity.

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Testing Fiber Optic Loss
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Two measurements of optical power required Compared to Category 5e or Category 6, fiber optics wire is easy to test. A “flashlight test” can make sure the fiber has continuity and is correctly identified.

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Fiber Optic Cleaving Techniques
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A good cleaver helps cut out costly mistakes To get good fiber optic splices or terminations, especially when using the pre-polished connectors with internal splices, it is extremely important to cleave the fiber properly.

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