It happened just after 10 a.m. near Shields and Chestnut Avenues. Officers say a driver hit a power pole causing the live wires to fall on to the street.
The driver immediately took off from the scene and police are working to a description of the car. Because PG&E decided to keep the wires live, power was kept on for hundreds of residents.
Chestnut and Shields Avenues could be closed until 8 p.m. while crews work on repairs.