A feed control device, configured to control power feeding from an external power supply to an electrically-powered car comprising a battery and a charge circuit configured to charge the battery, wherein the feed control device comprises: a power connector configured to be detachably attached to a power receptacle of the external power supply; a load connector configured to be detachably attached to a connector for receiving power, which the electrically-powered car is equipped with; a contact device placed at a feed line for electrically connecting the power connector and the load connector; a leak detector for detecting the occurrence of electrical leakage at the side of the electrically-powered car; a signal input circuit for receiving, from the side of the charge circuit, a state signal representing an operating state by a voltage level; a controller configured: to turn the contact device off when a state signal representing charge permission is not entered into the signal input circuit; to turn the contact device on when the state signal representing charge permission is entered into the signal input circuit; and to turn the contact device off when said occurrence of electrical leakage is detected; a feed detector for detecting the presence of power feeding from the external power supply by detecting zero crossing of voltage generated at the feed line between the power connector and the contact device; an output detector (23, 24) configured to detect the presence of power feeding into the side of the car based on voltage generated at the feed line between the contact device and the load connector; a contact weld sensor configured to sense that the contact device is welded based on a detection result of the output detector (23, 24) if the feed detector detects said presence of power feeding when the state signal representing charge permission is not entered into the signal input circuit; and an alarm device configured, if the contact weld sensor senses that the contact device is welded, to indicate the occurrence of weld to the outside, characterized in that the controller is configured, if the signal input circuit receives the state signal representing charge permission: to turn the contact device off for a predetermined time; to subsequently sense whether or not the contact device is welded through the contact weld sensor; and to turn the contact device on if the contact device is not welded. a power connector configured to be detachably attached to a power receptacle of the external power supply; a load connector configured to be detachably attached to a connector for receiving power, which the electrically-powered car is equipped with; a contact device placed at a feed line for electrically connecting the power connector and the load connector; a leak detector for detecting the occurrence of electrical leakage at the side of the electrically-powered car; a signal input circuit for receiving, from the side of the charge circuit, a state signal representing an operating state by a voltage level; a controller configured: to turn the contact device off when a state signal representing charge permission is not entered into the signal input circuit; to turn the contact device on when the state signal representing charge permission is entered into the signal input circuit; and to turn the contact device off when said occurrence of electrical leakage is detected; a feed detector for detecting the presence of power feeding from the external power supply by detecting zero crossing of voltage generated at the feed line between the power connector and the contact device; an output detector (23, 24) configured to detect the presence of power feeding into the side of the car based on voltage generated at the feed line between the contact device and the load connector; a contact weld sensor configured to sense that the contact device is welded based on a detection result of the output detector (23, 24) if the feed detector detects said presence of power feeding when the state signal representing charge permission is not entered into the signal input circuit; and an alarm device configured, if the contact weld sensor senses that the contact device is welded, to indicate the occurrence of weld to the outside, characterized in that the controller is configured, if the signal input circuit receives the state signal representing charge permission: to turn the contact device off for a predetermined time; to subsequently sense whether or not the contact device is welded through the contact weld sensor; and to turn the contact device on if the contact device is not welded.