There are a lot of misconceptions about arc flash, starting with what it actually is. It is not a flash of light or an arc of fire. It is related to but not the same as electric shock, and there is ...

Since the inception of the NFPA 70E 2000 Edition 10 years ago, there has been a major evolution in our understanding of the electric arc flash hazard. NFPA 70E has been revised twice and is now in ...

Electrical equipment is required to be field labeled by the NEC (NFPA 70) and OSHA. This requirement is meant to inform personnel working on energized equipment about ...

An arc flash risk assessment project is broken down into the following project phases: Phase 1 ― data collection. Phase 2 ― engineering analysis, which includes at a minimum the arc flash incident ...

Arc flash is defined as an explosive release of energy caused by an electrical arc. Typically, the arc results from either a phase-to-ground or phase-to-phase fault created by many possible events.

I’ve got some good news and some bad news. The good news is that, according to the U.S. Bureau of Labor Statistics, the number of occupational fatalities resulting from exposure to electricity has ...

When Ralph Lee first called attention to the threat of arc-flash explosions in the early 1980s, he noted that an electric arc between metals is four times as hot as the surface of the sun. Perhaps ...

“When I looked back and saw that I had no pants on the back of my legs, and literally, the skin was hanging off my arms and my legs, I just knew something horrific had happened.” So begins the story ...

Arc flashes present a serious hazard involving electrical equipment that is more common than many would believe. Due to OSHA’s reporting requirements for arc ...

A worker welds a bucket in an equipment shop. He completes his task and pushes his face shield and glasses above his eyes to more clearly observe the work. Afterward, he strikes an arc to continue, ...

QUINCY, MASS. (WHDH) - MBTA workers have been instructed to place protective covers on top of electrified third rails or turn the power to the rail off during nearby maintenance after an “arc flash” ...