the invention is a method for increasing the capacity of an electrical component , such as a bus bar , to carry an electrical current . the method comprises the step of exposing the electrical component to an evaporative fluid that is in fluid and thermal contact with the electrical component . upon heating , fluid undergoes a phase change at least partially to a vapor state . thus , electrical energy in the form of heat generated by the flow of current is dissipated at least partially by the evaporative fluid . as a result , the temperature of the electrical component is maintained within an acceptable range when carrying the electrical current .