The Basics of Datacom: Copper Media — Part 3
Oct 1, 1999, By Paul Rosenberg, Datacom Consulting Editor
Find out why placing data cables underground can save you time and money in the long run....
The Basics of Voltage Imbalance
Sep 1, 1999, By Paul Frank, Tel-A-Train
Electrical equipment; especially motors and their controllers; will not operate reliably on unbalanced voltages in a 3-phase system. Generally, the difference...
The Basics of Datacom: Copper Media — Part 2
Sep 1, 1999, By Paul Rosenberg, Datacom Consulting Editor
Here are key guidelines for installing and testing copper media....
Mounting a Dry-Type Transformer
Aug 1, 1999, By Bruce Bartling, Phillips Swager Associates
Did you hang your dry-type transformer in a location and in a position that will reduce its performance and shorten its life? How do you know?...
The Basics of Datacom: Copper Media
Aug 1, 1999, By Paul Rosenberg, Datacom Consulting Editor
So many people are praising the effect of fiber optics in the datacom market. However, advancements in speed continue in the copper media arena....
The Basics of 3-phase transformers — part 2
Aug 1, 1999, By Paul Frank, Tel-A-Train
Most large power (and many small distribution) transformer installations provide all three phases. Sometimes they do so with three single-phase units,...
The Basics of Fiber Optics — Part 3
Jul 1, 1999, By Paul Rosenberg, Datacom Consulting Editor
Fiber optics relies on a clear path for its signals. Make every effort to install splices, connectors, and terminations as clean as possible, thus reducing their effects on optical data transmission....
The Basics of 3-Phase Transformers — Part 1
Jul 1, 1999, By Paul Frank, Tel-A-Train
When connecting transformers, you may have to connect them to single- and 3-phase power sources as well as single- and 3-phase loads. Making the wrong...
The Basics of Fiber Optics — Part 2
Jun 1, 1999, By Paul Rosenberg, Datacom Consulting Editor
Certain characteristics affect the performance of typical optical fiber. Knowing what they are will help you make more knowledgeable design and purchasing decisions....
The Basics of Fiber Optics — Part 1
May 1, 1999, By Paul Rosenberg, Datacom Consulting Editor
Learning fiber optics is much easier than learning the laws of electricity. The only problem is it's relatively new to electricians and technicians entering the datacom industry. Here's an overview of how we use light to send communication signals, and why this method works so well....
Sizing Gen-Sets For Large Motor Starting
Feb 1, 1999, By Larry A. Bey, Cummins Onan Corp.
Remember, an on-site engine-generator set is a limited source of power, both in horsepower available from the engine, and kVA available from the generator. As such, it must be large enough to start as well as run connected motor loads....
The Basics Of Selecting Overload Relays
Jan 1, 1999, By Paul Frank, Tele-train
Overload relays are inexpensive, but the results of selecting the wrong one for the application can be catastrophic for your motor, process, or both....
The Basics of Panelboards
Dec 1, 1998, By Scott Falke
It's easy to make mistakes when installing and wiring a lighting and appliance panelboard. Let's look at some basics that apply to its installation. You can use this article as an abbreviated checklist to keep the electrical inspector from citing your installation....
The basics of transformers, part 2.
Dec 1, 1998, DeDad, John A.
Copper losses in both primary and secondary windings, and core losses are converted into heat in a transformer. These losses are all measured in watts....
Fixing a Fish Tape
Dec 1, 1998, By Larry Adelman, Greenlee Textron
Your fish tape broke. You don't have time for the round trip to get another one and still finish the job today. Will you have to come back tomorrow? Not if you know how to fix it in the field....
