10abb172_unicipal_well_and_pump_service__HOW_TO_CORRECT
[CAUSE OF TROUBLE] 9. Motor shorted out [HOW TO CHECK] If fuse blows when pump is started (and the external wiring is OK), the motor is shorted. [HOW TO CORRECT] 
Replace the motor.
Troubleshooting Submersible and Jet Pumps - Earl Pruitt's Residential - Municipal well and pump service
HOW TO CORRECT