We also need to recognize that “high voltage” means different things depending on the worker’s perception. Exposure to energized 480VAC, for example, can constitute a very serious arc flash hazard. ..

Arc flash incidents are more common in certain low voltage and high voltage equipment than others. Recent incident investigations present an insight that isn’t necessarily in the field of vision ...

After 30 years, there's a problem. A short occurs in the power lines going to the high-voltage power supply. In essence, two of the individual phase lines short together. The transmitter goes down, ..

ANSI Standard C37.06-2000, titled “AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis-Preferred Ratings and Related Required Capabilities”, lists the preferred interrupting ...

Every day, an estimated five to 10 arc flash incidents occur and more than 2,000 people are hospitalized each year, according to The National Fire Protection Association (NFPA).. With arc flash and ...

Although plant workers may be tempted to treat low-voltage equipment as less risky than its high-voltage counterpart, more accidents occur with 480V equipment than with higher voltage equipment. In ...