An employee was assisting a co-worker in running a new piece of temporary cable from service/gear #1 to the existing transformer. The co-worker was feeding a cable through a plug to the injured employee, who had his right hand inside the switch gear #2 in order to grab the cable. An arc flash occurred as a result of switch gear #2 being energized and the employee was exposed to 480 volts of electricity, resulting in electrical burns to the left hand, arm, chest, and ear.