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Mark W. McElroy

Articles by Mark W. McElroy
Beware of extended UTP warranties
Differences in terminology and the absence of a 155 Mbps standard may cause problems.Now that Category 5 UTP (unshielded twisted pair) and connecting
New developments in patch panel technology.
Three types of patch panels (wireless, electronic, and intelligent)have benefits and drawbacks, depending on the application.When it comes to making a
Network redesign permits intercommunication.
Replacing a system having many proprietary protocols with one having a common protocol enables intercommunication.Creating and following a long term information
New applications for voice/data cabling systems.
Voice/Data wiring schemes and media are ideally suited to many of the building-oriented control systems described by the Intelligent Buildings Institute.New
D&B's new worldwide headquarters: a case stud
The design and installation of new voice/data, premise, video, audio/visual, and information wiring systems required close coordination so that a tight
What's the new TIA EIA 568-A standard?
Important revisions to the original TIA/EIA 568 standard may include new and previously issued TSBs, and maybe even a protocol for testing UTP horizontal

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Understand Arc Flash Safety for Motor Control Centers
An arc flash is associated with the explosive release of energy caused by an electrical arc, due to either a phase-to-ground or a phase-to-phase fault. This kind of fault can result from many factors – a dropped tool, accidental contact with electrical systems, buildup of conductive dust, corrosion or improper work conditions.....More
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2011 Electrician Exam Preparation Book & Journeyman Simulated Exam
Printed in full color, the 2011Exam Prep book covers Theory, Code, and Calculations in great detail. Clear colorful graphics...
2011 Understanding NEC Requirement for Solar Photovoltaic Systems
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Apr. 15, 2013
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The Westex Difference

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