ECM Buyers' Guide

electrical basics


The Basics of Parallel Circuits 

Jun 1, 2003, By R. Fehr, P.E., Engineering Consultant

Components in parallel share current, but not necessarily equally...

The Basics of Grounding Systems 

May 30, 2003, By Jack Woodham, P.E., Jedson Engineering, Inc.

Knowing the pros and cons of the three most popularly installed grounding systems makes grounding system design decisions easy....

The Basics of Grounding Systems 

May 1, 2003, By Jack Woodham, P.E., Jedson Engineering, Inc.

Knowing the pros and cons of the three most popularly installed grounding systems makes grounding system design decisions easy....

The Basics of Series Circuits 

May 1, 2003, By Ralph Fehr, P.E., Engineering Consultant

You're probably familiar with the old-fashioned strings of holiday lights that go out completely if one bulb burns out. Although these lights cause hours...

The Basics of Power Factor and Efficiency 

Apr 1, 2003, By R. Fehr, P.E., Engineering Consultant

You don't always get what you pay for...

The Basics of Capacitance 

Mar 1, 2003, By R. Fehr, P.E., Engineering Consultant

Last month's column explained that AC current flowing through an inductance reaches its peak amplitude after the voltage. Lagging current is characteristic...

The Basics of Legally Required Standby Systems 

Feb 14, 2003, By Mike Holt, NEC Consultant

Emergency rescue efforts in your facility may depend on how well you meet Art. 701 requirements....

The Basics of Inductance 

Feb 1, 2003, By R. Fehr, P.E., Engineering Consultant

Inductance is the link between electric circuits and magnetic fields....

Understanding Lamp Dimming Technologies 

Feb 1, 2003, By Joe Knisley, Senior Editorial Consultant

Users can easily reduce energy usage with dimmers....

The Basics of Legally Required Standby Systems 

Jan 1, 2003, By Mike Holt, NEC Consultant

Emergency rescue efforts in your facility may depend on how well you meet Art. 701 requirements....

AC Fundamentals 

Jan 1, 2003, By R. Fehr, P.E., Engineering Consultant

Alternating current circuits improve the versatility and usefulness of electric power systems...

The Basics of Digital Multimeters 

Jan 1, 2003, By Jim Gregorec, Ideal Industries, Inc.

Here’s a primer on symbology, terminology, connections, and basic measurement techniques for modern multimeters...

The Basics of Surge Protection 

Oct 1, 2002, By Mike Holt, Mike Holt Enterprises, Inc.

Surge protection basics are the foundation for a solid protection strategy....

The Basics of Grounding 

Sep 1, 2002, By Mike Holt, Mike Holt Enterprises, Inc.

You can understand grounding by overcoming common reasons for confusion....

Understanding Air Pressure Systems for OSP Cabling 

Jul 1, 2002, By Joe A. Hite, RCDD/OSP Specialist, CT Communications

Although not as common as they once were, air pressure systems do still exist, so you should prepare yourself for when you encounter one....

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