Fiber Versus Copper: The Battle for Supremacy
Dec 1, 1999, By Paul Rosenberg, Datacom Consulting Editor
Will optical fibers to the desk ever see the light of day?...
Unconventional Transformer Connections — Part 2
Dec 1, 1999, By Scott Falke, Turlock, Calif.
Part 1 showed us how to use unconventional transformer configurations to resolve equipment availability problems and unusual circumstances. Part 2 provides more examples, and a look at the tradeoffs involved. Let's begin with Case Five....
Quizzes on the Code
Dec 1, 1999, By Fred Hartwell, Hartwell Electrical Services, Inc.
Temporary Wiring -- Art. 305...
Quizzes on the Code
Nov 1, 1999, By Fred Hartwell, Hartwell Electrical Services, Inc.
General wiring rules -- Art. 300...
UPS Stands on Firm Ground
Nov 1, 1999, By Dawn VanDee, P.E.
Grounding is often misunderstood, especially when multiple sources of power supply are present....
Solar energy partnership offers economic energy alternatives
Nov 1, 1999, By EC&M Staff
Recognizing a need for affordable renewable energy, DTE Energy initiates one of the largest photovoltaic installations in the world....
Code Quandaries
Nov 1, 1999, By Fred Hartwell, Hartwell Electrical Services, Inc.
NEC questions from our Web site...
Ten Tips for Using Estimating Software
Nov 1, 1999, By Eric David, Accubid Systems
You've now got the estimating software your competitor used to beat you last year. It looks great. The problem is, how do you use it?...
Code Forum
Nov 1, 1999, By Fred Hartwell, Hartwell Electrical Services, Inc.
Sizing Small Motor Circuit Conductors...
Flywheel technology improves power quality at Ohio power company
Nov 1, 1999, By EC&M Staff
When American Electric Power (AEP), Columbus, Ohio, designed its new energy delivery headquarters, power quality was at the top of its list of concerns....
Timeless Tips for Terminating Aluminum Cables
Nov 1, 1999, Edited by John A. DeDad, Editorial Director
If you follow practical guidelines for installing and terminating aluminum cables, using these conductors makes sense in many applications....
Trucks for the New Millennium
Nov 1, 1999, By Jime Mele and Deborah McGuffie, Fleet Owner magazine
Over the past few years, there has been a virtual explosion in new product launches, technologies, and support packages. As the following pages reveal, more is in the offing....
The basics of selecting industrial fuses — part 2
Nov 1, 1999, By Paul Frank, PRIMEDIA Workplace Learning
In last month's article we discussed the importance of selecting the correct fuses for an application; not only when you first specify them, but also...
A New Standard for Wireless Communications
Nov 1, 1999, By Joseph R. Knisley, Senior Editorial Consultant
Seven years in the making, the most important network standard since 100-Mbit/s fast Ethernet (100Base-T) was ratified in the summer of 1999. Now, wireless LANs are a viable complement to their wired counterparts....
The basics of transformers - Part 1
Nov 1, 1999, DeDad, John A.
A transformer is an energy coupling device that takes electrical energy at one voltage (from its source) and transforms it to another voltage. The new...
A Matter of Safety Interlocks
Nov 1, 1999, By Michael J. Foley, Technical Consultants Group
Poor maintenance and unsafe working practices lead to injuries.What was supposed to be a routine maintenance job for two workers turned into a near life...
Using Your DMM and Scope Wisely
Nov 1, 1999, By John A. DeDad, Editorial Director
Here's a primer on symbology, terminology, connections, and operation for modern digital multimeters and oscilloscopes....
A power plant on every block?
Nov 1, 1999, By EC&M Staff
Amid summer power shortages, continued utility restructuring, and consolidation, affluent American households are receptive to the idea of generating...
Correspondence Lesson 10: Home Controls
Nov 1, 1999, By Paul Rosenberg, Datacom Consulting Editor
So far in this course, we've limited our coverage to technologies for the commercial, industrial, and institutional sectors. In this lesson, however,...
Industry acquisitions
Nov 1, 1999, By EC&M Staff
Integrated Electrical Services, Inc., Houston, recently announced the acquisition of five companies with combined annual revenues of approximately $51.4...
Modern MCCs Get It Together
Nov 1, 1999, By Paul L. Johnson and James Grubb
Today's motor control centers (MCCs) are smaller, more simple, economical, practical, and versatile....
Transformer Installation Basics
Nov 1, 1999, By Scott Falke
You must power a new office in Warehouse 5. To do this, you need a 3kVA transformer (277V single-phase to 120V, 2-wire) for lighting and a receptacle...
Analyzing transformer insulating fluid.
Nov 1, 1999, Miller, George
As part of a complete preventive maintenance program, periodic oil analysis will monitor the condition of power transformers and detect problems before...
A New Fiber-Optic Installation Standard
Nov 1, 1999, By Paul Rosenberg, Consulting Datacom Editor
When installing optical cable, what you don't know could really hurt you or damage your cable. Familiarizing yourselfwith Standard 301 is a smart step to avoid such problems....
Using Arc-Fault Circuit Interrupters To Reduce Residential Fires
Nov 1, 1999, George D. Gregory
Possibly coming soon to an electrical distributor near you is the arc-fault circuit interrupter (AFCI). Although they may seem like just another new industry...
