WORKING VEHICLE

A working vehicle includes a relay component and three chargers for a single-phase alternating-current power supply to supply electric power to an electric motor. Selected as the relay component and mounted to the vehicle body is a first relay component when the external power supply PS is a three-phase alternating-current power supply and the power cable Ca has an output plug PgA of a four-wire type including a ground wire, a second relay component when the external power supply PS is the three-phase alternating-current power supply and the power cable Ca has an output plug PgB of a five-wire type including the ground wire, or a third relay component when the external power supply PS is a single-phase alternating-current power supply and the power cable Ca has an output plug PgC of a three-wire type including the ground wire.