Transformer Installation Basics
Nov 1, 1998, 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...
Understanding UPS Techno-Babble
Nov 1, 1998, By Dawn VanDee, P.E.
"Double-conversion," "single-conversion," "off-line standby": What do these static UPS operating terms mean? And what about inverter technology terms such as"step wave," "pulse-width modulation," and "ferroresonant?"...
The Basics of Pulling Wire
Oct 1, 1998, By Mark Lamendola, Technical Editor
Have you ever seen a wire pull become a disaster? This doesn't need to happen. Several wire pulling tools and methods exist, but "pull by fishtape" is...
Conduit Fittings: It Depends on How You Face Them
Oct 1, 1998, By EC&M Staff
The August Back To Basics article, “The Basics Of Conduit Fittings,” uses the term “condulets.” Condulet® is one of Crouse-Hinds’ registered trademarks...
The Basics of Multiple Conduit Runs
Sep 1, 1998, By Mark Lamendola, Technical Editor
A neat conduit job says a lot about you. Yet, you've often wasted a large amount of conduit trying to achieve a good appearance. Is there a trick to this? Is there a way to make a good-looking installation without filling the scrap barrel? Of course there is, and we'll see exactly how to do it....
Handheld Instruments And Test Equipment: What To Use And How To Use It
Sep 1, 1998, By Warren H. Lewis
Want to know about the new hand-held test instruments currently available to you? These new breeds actually produce better results than most of the heavy, tabletop, and laboratory-grade equipment available just a few years ago....
Belleville Blues?
Aug 1, 1998, By EC&M Staff
Bus bar connections are critical in electrical installations. I want to clarify some items in the May “Back to Basics” article. Most bus bars are silver...
How Are AC Adaptors Rated?
Jul 1, 1998, Edited by Robert J. Lawrie
I would like to know how AC adapters are rated, so I will not damage an electronic device. For example ......
The basics of bending conduit — part 2
Jul 1, 1998, By Mark Lamendola, Technical Editor
In Part One, we looked at how to mark conduit for a right-angle bend. You can use the same techniques for end bends and offsets. As before, we'll assume...
The Basics of Bending Conduit — Part 1
Jun 1, 1998, By Mark Lamendola, Technical Editor
Conduit bending is truly one of the fundamental tasks of the electrical construction industry....
The Basics Of Making Bus Bar Connections
May 1, 1998, Mark Lamendola
Bus bar connections often fail because those making the connections fail to follow the basic rules. Just as often, however, the connections fail even...
The Basics of Alternating Current
Apr 1, 1998, John A. DeDad
The most common frequency of alternating current is 60 cycles per second (usually termed 60 cycles) or more commonly, 60 Hertz (Hz). The latter unit is...
The basics of calculating voltage drop
Mar 1, 1998, Mark Lamendola
How do you know if your wiring will provide a reasonable efficiency of operation? The National Electrical Code, 210-19(a) (FPN 4) and 215-2 (b) (FPN 3),...
The basics of transformers. (part 4)
Feb 1, 1998, DeDad, John A.
There are many transformer configurations available today, each applicable to a certain situation or design requirement. Let's discuss one of the more...
The Basics Of Determining Raceway Fill
Feb 1, 1998, Mark Lamendola
You may have laughed at the electrical drawing the first time you saw it, but now you have to finish the installation, and you still don't have a good...
