A hoist system for cable-reeling operations includes a housing; a drum disposed within the housing and configured to spin about an axis; a motor configured to spin the drum about the axis; an electrically-conductive cable configured to be wound and unwound from the drum as the motor spins the drum about the axis; an electrically-grounded sheave configured to guide the electrically-conductive cable through the housing; and an electrical contact sensor configured to detect contact with the electrically-conductive cable.