Abstract: At 9:50 a.m. on December 10, 2020, Maintenance Technician was assigned by his supervisor to change a motor on a machine. While working alone, he identified the need to change a fuse on the South Side Main Switch Board #5 Service Panel. As he attempted to pull the old fuse using non-insulated metal channel locks, an arc flash explosion occurred, propelling him backward. The incident resulted in electrical burns to his arms and face. The employer failed to ensure that Brian utilized safety-related work practices while performing electrical work, such as changing fuses on live electrical equipment, and did not provide the correct type of fuse puller compliant for working around live electrical systems. The employee was hospitalized.