Abstract: At 9:00 a.m. on August 29, 2021, an employee working as a machine maintenance technician for a plastics manufacturer was replacing a 480-Volt barrel heater on the extrusion line 9. The employee removed the mesh cover from the top side of the heater cover and began tracing the wiring connections. As the employee manually moved the wires with his right hand, he contacted an energized circuit receiving a shock. The employee was able to remove his hand from the equipment and he left the area. Later, the employee went to the emergency room, where he was hospitalized to treat internal burns to his middle and ring fingers.