![]() ![]() What’s more, the combination of pressure and fire will blow electrical equipment apart, sending blast shrapnel into a worker’s body.Īn arc flash can cause second- and third-degree burns if the victim is several feet from the arc. ![]() The explosion has enough force to push a worker off a ladder or throw them across rooms, rupture eardrums, or collapse a worker’s lungs. The intense heat results in a sudden expansion of air, which causes an invisible arc blast with a very high air pressure wave. Inappropriate operation of a load break switchĪn electrical arc flash can reach temperatures of up to 35,000 degrees F, about four times the temperature of the sun’s surface.Corrosion on poorly maintained equipment.when workers carelessly drop tools on live parts or when they fail to ensure that equipment is properly de-energized. Incidents of arc flashes often occur by human error, e.g. ![]() The flash is immediate and happens in a fraction of a second, but the consequences can be devastating for anything in its path. The plasma will then conduct energy, resulting in the release of massive energy that burns the bus bars, vaporizes the copper, and causes a fiery explosion. The cause of the short typically burns away after a few seconds but highly conductive plasma (ionized gases) is established to sustain the arc fault. The term “arc flash” describes an unwanted, rapid, and dangerous electric discharge that travels through the air due to an arcing fault between several electrical conductors. Tags: arc flash safety, preventing arc flash ![]()
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