Electrical Contractor Magazine

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. 

Optical local area networks (OLAN) will cause you to rethink practically everything you have learned about LANs and LAN cabling. Of course, any major change in technology like this causes FUD (fear, uncertainty and doubt), just like voice-over Internet protocol (VoIP) and Wi-Fi have already. 


Sometimes, a power quality investigation can lead you to see things that you aren’t really looking for and might be a distraction from what the customer wants you to do.

Electrical professionals understand that the purpose of a smoke detection and alarm system is generally to provide life safety for building occupants. They also understand that the goal of the fire alarm system is to provide occupants with as much escape time as possible.

Economic improvement and rising demand for energy efficiency is boosting the market for structured cabling in building automation systems (BASs). Vendors and market analysts are preparing for large-scale growth.

Electrical Contractor Magazine

More on Systems

 
Dealing with Obsolete Components
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It may seem unbelievable, but fiber optic links and networks have been used for over 20 years. The first telco networks were installed in the late 1970s and data links were already in use by 1980, when there were few personal computers (PCs) and computer networks.

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Seizing Opportunities to Install Open Systems
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“In 1998, I saw a presentation about integrated systems at a [National Electrical Contractors Association] NECA seminar. This year we’re going to do close to $7 to $8 million on integrated systems, not including the additional sales generated for the electrical side of our company.

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Review Metal-clad Cable Requirements
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There are a number of changes in the 2002 National Electrical Code (NEC) regarding Metal-Clad (Type MC) Cable that should be reviewed before your next electrical project. In the 1999 NEC, Article 334 covered Type MC Cable; however, in the 2002 NEC, Type MC Cable has been relocated into Article 330.

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TIA Adds Structure to BAS Cabling
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TIA TR 41.8.1 is trying to do for building automation cabling what it did for building telecommunications cabling—add structure, standards, and guidelines.

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Fire Pumps and Alarm Systems, Circuits, Services, and More
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CODE CITATIONS Article 100—Definitions Article 210—Branch Circuits Article 230—Services Article 695—Fire Pumps Article 725—Class 1, Class 2, and Class 3 Remote-Control, Signaling, and Power-Limited Circuits Article 760—Fire Alarm Systems Article 770—Optical Fiber Cables and Raceways Article 800—Comm

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Calculating Fiber Optic Power Budgets
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After a fiber optic cable plant is installed, it may be used with several different types of fiber optic networks. Computer networks, telephone signals, video links, and even audio can be sent on the installed fibers. Each network type has a performance requirement for the fiber optic cable link.

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Software Providers Get into the Game
by Staff |
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All five major providers of electrical estimating software—Accubid, ConEst, McCormick Systems, Trade Power, and Vision Infosoft—are now involved in e-commerce.

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