Arc Flash Extinguished? A dropped wrench.  A forgotten screwdriver.  A scurrying squirrel.  These are just some of the seemingly insignificant events that can cause an arc flash.  Arc flashes can be devastating.  An arc flash burned the skin off Andy Tomko’s face, removed parts of his ears, and "impaled" metal in his teeth.  An arc flash burned Don Stewart’s pants off the back of his legs and left the skin “literally ... hanging off [his] arms and legs.” more