A coroner's report says rescuers risked electrocution to help five young people after the car they were in crashed into a power pole.
A low-speed crash at Glentui in Canterbury in 2014 turned to tragedy when three people got electric shocks from the live wires, killing bartender and caregiver Jamie Webb.
Coroner David Crerar says all five survived the crash with only minor injuries but three, including Mr Webb, were shocked when they tried to get out of the car.
Two bystanders who tried to pull people from the crash were also shocked.
Mr Crerar says speeding wasn't a factor but the driver was on a learner licence and none of the passengers were wearing seatbelts.