A few years ago, the term “arc flash” crept into our electrical technical vocabulary. Since that time, performing arc flash calculations remains a challenge for many of us. Calculating incident energy ...

The five NFPA 70E boundaries include arc flash, limited approach, restricted approach, hearing protection, and lung ...

In the electrical industry, and the workplace in general, the phrases "arc flash" and "hazard risk analysis" are generating much interest and attention. Many managers and supervisors are asking "why ...

An arc flash occurs due to a phase-to-ground or phase-to-phase short circuit. The extreme heat, light, and pressure blasts associated with these events make it necessary to take precautions when ...

The National Fire Protection Association (NFPA) 70E Standard for Electrical Safety in the Workplace has been around since 1979. The sections related to electric arc flash were introduced back in 2000.

Electrical crews rarely operate in ideal conditions. Most of the time, crews are making repairs and improvements in vast, open spaces. That makes workers more vulnerable to risks and hazardous ...

Arc flash is the term describing an extremely dangerous electrical hazard when uncontrolled current passes between two conductors. When voltage is high enough (over 480V), the intense heat of the arc ...

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.

Standards and regulations may change, but the danger associated with arc flash hazards remains. Analyzing potential incident energy correctly and understanding what personal protection equipment is ...

Greg A. Quick is a manager in Product Marketing/IE Product Management for Rittal Corp. For systems designers, and facility and maintenance engineers, no responsibility is more critical than that of ...

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 ...

In a typical television transmitter installation 30 years ago — at a time when big power was coming into play (three-phase, 460VAC) — power was fed from a transformer located just outside of the ...