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. 

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A good fire alarm system design becomes a function of how well you understand fire-protection principles as well as the requirements of NFPA 72, National Fire Alarm and Signaling Code, and NFPA 70, National Electrical Code (NEC).

For several recent columns, I have been writing about splicing optical fibers. Last month, I covered managing fibers inside the splice trays and closures. But there is even more to know about splice closures.


The evolution of intelligent building system technology has triggered shifting roles for contractors and integrators, and the choices they make in their own specializations over the coming years can mean the difference between winning contracts and keeping customers or becoming less relevant.

Demand for wiring and cabling is expected to grow in the months and years ahead. Low-voltage applications for light-emitting diode (LED) technology and fiber optic cabling within the power-generation and telecommunications industries will help drive this market.

More on Systems

 
Intrusion Detection for Secure Networks

On the scene to protect vital data for hotels, casinos and more Intrusion detection systems (IDS) are some of the new kids on the secured-computing block. While these network-based systems are on the rise, they are still misunderstood and not used nearly enough.


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Access Control Wizardry

Smarts and flexibility reign in this product genre Just when you thought access control had hit its peak, there’s more innovation to report. Access control is not just for physical security anymore, even though that too has seen its share of technological advances.


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Integration Infatuation

Stop thinking burglar and fire alarms and start thinking computer-based integrated building solutions No matter what you call it—low voltage, voice/data/video or security—it’s a discipline that almost always is coupled with other technologies, facilities management and computer functions in a turnk


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Grounding of Receptacles, Overcurrent Protection for a Feeder and More

Article 110 Requirements for Electrical Installations Article 250 Grounding Article 310 Conductors for General Wiring Article 312 Cabinets, Cutout Boxes and Meter Socket Enclosures Article 430 Motors, Motor Circuits and Controllers Article 518 Places of Assembly Thermostat as motor disconnect Q:May


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Fusion Splicing

The best method for fiber ending Fiber is no longer the cable of the big guys alone. Things have changed and fiber is more affordable and more popular than in the past—it has even reared its head in the home networking market. Like the tortoise, fiber has taken the slow-but-steady approach.


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New Uses For Fiber Optics

Signs, sensors and nondestructive testing Most contractors, as installers of building cabling systems and those involved with telephone companies, CATV or utility outside plant installations, are familiar with fiber optics.


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STP vs. UTP

Money usually decides this debate One of the great debates that affects contractors—especially those dealing with communications systems—may be the question of shielded twisted pair (STP) or unshielded twisted pair (UTP).


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