EC&M Article Archive


The Case of the Shocking Switch 

Aug 1, 2000, By Ralph Crawford, P.E.

It seemed like an ordinary morning, as the dental clerk began her office startup routine. Yet when she tried turning on the motor-driven compressor from...

News Briefs 

Aug 1, 2000, By EC&M Staff

Breaking news around the industry...

The Top 25 Proposed Code Changes for 2002 

Aug 1, 2000, By James Stallcup, Sr.

As the next edition of the NEC begins to take shape, here's a look at the top 25 most important proposed Code changes that will affect you as an electrical professional....

News Briefs 

Aug 1, 2000, By EC&M Staff

Breaking news around the industry...

Classifying and Using Class 1, 2, and 3 Circuits 

Aug 1, 2000, By James Stallcup, Sr.

Classifying and Using Class 1, 2, and 3 Circuits...

Apprenticeship Act May Ease Skilled Worker Shortage 

Aug 1, 2000, By EC&M Staff

Construction companies across the country continue to face workforce shortages due to lack of skilled workers in this industrymore than 250,000 jobs annually...

Insulation Resistance Testing: How and Why? 

Aug 1, 2000, By John A. DeDad

How significant is insulation resistance testing? Since 80% of electrical maintenance and testing involves evaluating insulation integrity, the answer...

Code Violations Illustrated 

Aug 1, 2000, By Joe Tedesco, NEC Columnist

More Code Catastrophes...

NFPA's Consensus Codes Set Makes Progress 

Aug 1, 2000, By EC&M Staff

Some of the country's leading code organizations are moving forward in the development of the NFPA Consensus Codes seta full set of codes for the built...

Top Networking Nuisances 

Aug 1, 2000, By EC&M Staff

Moves, Adds, and Changes (MACs) continue to be a leading headache for network professionals, according to a recent survey by Cablesoft, Tempe, Ariz.Conducted...

Which Software for What Task? 

Aug 1, 2000, By Mark Lamendola

Even the best software can reduce your productivity, if you use it for the wrong task....

Code Calculations 

Aug 1, 2000, By Mike Holt, NEC Consultant

Sizing Outlet Boxes -- Part 2...

Premises Cabling Market Reaches Saturation Point 

Aug 1, 2000, By EC&M Staff

A recent market research study of the U.S. premises cabling system market, conducted by World Information Technologies, Inc., Northport, N.Y., indicates...

Switching the Neutral: What's the Controversy? 

Aug 1, 2000, By Paul McMorrow

Which method is best for switching the neutral: 3-pole transfer switches with overlapping neutral contacts or 4-pole switches? The answer may surprise you....

Firestopping Fundamentals 

Aug 1, 2000, By Paul Rosenberg

When installing cable on any project, you must consider fire containment. This means understanding the importance of firestopping. Technically speaking,...

Code Quandaries 

Aug 1, 2000, By Mike Holt

Stumped by the Code?...

Source Alliance.com Expands Industry Presence 

Aug 1, 2000, By EC&M Staff

Serving the industrial, commercial/construction, utility, and data communication sectors, SourceAlliance.com now offers more than 1 million products (from...

Facility Security: Intrusion Systems, Part 2 

Aug 1, 2000, By Paul Rosenberg

Lesson Eight...

Test Your Motor Control IQ 

Aug 1, 2000, By Larry Baran, Motor IQ Columnist

Can you ace this duplex pump controller circuit quiz?...

Hit a Grounding Home Run 

Jul 1, 2000, By Mark Hartfiel and Mark Lamendola

Find out how to save time and money with grounding upgrades and fatten your bottom line with new commercial and residential opportunities....

The Basics of Zigzag Transformers 

Jul 1, 2000, By C. Sankaran, P.E.

These transformers have special windings, appropriate for special applications....

News Briefs 

Jul 1, 2000, By EC&M Staff

Breaking news around the industry...

Powering a City Within a City 

Jul 1, 2000, By Jim Berard, Eli Sherman, and James Daley, P.E.

The sophisticated power monitoring and control system at Sprint World Headquarters Campus allows facility engineers to override automatic load-trip orders and permit load shedding or peak shaving as necessary....

Code Violations Illustrated 

Jul 1, 2000, By Joe Tedesco, NEC Columnist

More Code Catastrophes...

Federal Funds to Fuel Airport Expansions Nationwide 

Jul 1, 2000, By EC&M Staff

A recently approved $40-billion federal spending bill for new airport construction and modernization will create a surge in demand for electrical products...

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May 16, 2012 9:26 AM

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Grounding Versus Bonding
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