Abstract: At 1:00 p.m. on October 31, 2018, an employee and a coworker were cleaning and removing material from the inside of a nacelle that belonged to wind tower A-17. As they were finishing up their task, the employee asked the coworker what the purpose was for an electrical box, called DAQ, that was located on the ground. The coworker stated that the box served no purpose and suggested that the employee cut its wires and remove the box. The DAQ box was opened and a energized 690V was cut with diagonal cutters. An arc flash occurred, resulting in the employee sustaining electrical burns to his fingers, hands, and forearms. The employee was hospitalized and received treatment for his injuries.