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. 

Beginning with the 2010 edition of NFPA 72, National Fire Alarm and Signaling Code, all of the “styles” of circuits were deleted, and four “classes” were added. A new chapter, Circuits and Pathways, was added during the reorganization of this code.

Many designers of the notification portion of a fire alarm or mass notification system (MNS) seem unaware of the specific performance requirements for each type of appliance as required or allowed by NFPA 72 2016, National Fire Alarm and Signaling Code.

Based in San Jose, Calif., Integrated Communication Systems (ICS) has been building its success as a low-voltage integrator for 15 years. The 80-employee firm, founded in 2002 by Aaron Colton, president and CEO, serves low-voltage integration needs in San Francisco and the Bay Area.


Fluke Networks round cable stripper

Correctly preparing and connecting copper wiring in a building’s structured wiring system requires special skills and the right tools. A single faulty connection can bring down an entire network.


More on Systems

 
The Surveillance Migration

There is no doubt that video surveillance cameras are a critical, indispensable part of security at the customer’s protected premises. They can provide general security and assist with human resources functions when integrated with access control.


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Plug And Play: The Demand for Integrated, Open Systems


When you examine an end-user’s needs, do you really know what they expect from their security solution? They want plug-and-play, like popular consumer platforms based on the highly convenient and adaptable iOS and Android operating systems.



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What Business Are You Really In?

The title of this article is not meant to make you smile. 
Most Electrical Contractor readers work in the contracting business. But, on a daily basis, personnel and clients likely bombard you with requests to take on a new challenge and to do a better job at the work already being performed.



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More To Come: A Sneak Peek at the 2019 NFPA 72, Part 2


In October, I listed some of the significant changes proposed for the 2019 edition of the NFPA 72, National Fire Alarm and Signaling Code. This month, I cover more of the important proposed changes. Keep in mind that this is based on the public input stage.


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Fluke’s laser distance meter
Cool Tools: Measuring Tools

Measuring tapes are a basic and necessary tool. When the dimension to be measured is inaccessible, handheld, laser 
distance-measuring tools may be the only safe and practical solution. 
 There are many options today for taking measurements on structured-wiring projects.
 Laser measuring tools



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A True Turnkey Integrator

Ferndale Electric Co., Ferndale, Mich., which employs an average of 130 electricians, performs electrical work for automotive plants, power plants, bottling plants and other industrial facilities. It also renovates electrical systems for lift bridges and completes major projects for airports.



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Open to Interpretation: The Accuracy of Optical Loss Measurement Data


Last month, I discussed making loss measurements with a light source and power meter—what we call optical insertion loss—and the causes of errors in those measurements.


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