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Ohm’s Law…the Relationship between Voltage, Current and Resistance

Theory Terms and Definitions The following definitions relate to basic electrical theory. It is important that installers and inspectors have a working knowledge of electrical...

CODE HUNTER — Voltage, 2014 NEC

To play this game, you need a sharp eye, a quick mind and a 2014 National Electrical Code book. (Fill-in-the-blank questions are looking for...

Voltage Thresholds in the NEC. Moving on up?

There were 120 proposals submitted to raise the 600-volt threshold in the NEC to 1000-volts in the 2014 NEC cycle. These proposals were submitted...

Mechanical Answer to Stray Voltage

Tenants of the Time & Life Building in New York’s Rockefeller Center include Time Inc., publisher of more than 100 magazines. In an effort...

Stray Voltage — Catching What We Cannot See

"Where the cow won’t give milk anymore” is a standard lyric in old classic country songs; perhaps you’ve wondered why. Well, back in the...

Energy Loss, Global Warming and Voltage Drop

Safety first. That’s been the byword for electrical codes and electrical inspectors forever — and properly so. But is that enough? For people and...

Voltage-Drop Requirements Cannot Be Ignored

Typically, when length is a factor in the installation, so is voltage drop. A variety of installations may involve feeders or branch circuits of...

Electrical Safety Should Not Be Compromised

With a permanently mounted live line indicator, the end-users are instantly warned that a particular part of their high voltage installation is energized and...
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