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Voltage Drop Calculations

Voltage drop is only mentioned in some sections of the NEC as informational notes, and is required to be calculated in other sections of...

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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