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. 

Too often, contractors seem to assume that only Article 760 of NFPA 70, National Electrical Code (NEC), applies to fire alarm installations. I have witnessed many jobs where this has been the case. In fact, other NEC sections also apply.

What does security’s future hold? How can electrical contractors position their security and low-voltage divisions to embrace current technology, while proactively addressing customers’ future needs?

When small companies promote their businesses, they often mention that their size makes them more efficient. One electrical contractor that would take exception to that claim is Santa Clara, Calif.-based Redwood City Electric.

For data centers that still use copper, Category 8 (Cat 8) cabling promises to quadruple speed to 40 gigabits. Cat 8 could operate at a bandwidth frequency of 2 gigahertz.

More on Systems

 
The Trouble with Mismatched Fibers

Careful documentation can help Gone are the days when all fiber optic cables were the same. Most building cables had 62.5/125 micron multimode fibers for LANs or security systems, while outside plant cables were all single-mode fiber.


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Make Data More Productive

Improving the information flow Real-time data is a hot commodity in technology-for-business circles right now. The interest is mostly coming from big companies, but that doesn’t mean it’s not for you. Real-time data is useful to even the smallest contractor with employees.


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Detecting a Trend in the Residential Market

More homeowners want CO detectors installed Smoke detection in the home has saved numerous lives and is now a normal part of every electrical contractor’s commercial installation package.


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Analog Addressable Fire Alarm Systems

Is high-tech better? Fire alarm system technology seems to be developing faster each day. It wasn’t that many years ago when an electrician treated a fire alarm system just like any other electrical system he or she had to install.


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Choosing the Right System

Choices include surveillance, access control and location Safety and security systems for any healthcare facility are complex. There are so many “systems” available that it is quite daunting to decide which ones are worth the investment.


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Article 220-Branch Circuit, Feeder and Service Calculations

Cooking Equipment Calculations, Part IV 220.19 Electric Ranges and Other Cooking Appliances


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MooreAiis Law is Calling

Physical security and information technology team up Moore’s Law basically states that computer technology doubles in ability every 18 months or so, but why should that be a surprise?


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