To prevent catching workers or the like from getting electric shocked by this electric current by causing the catching worker or the like to detect the presence or absence of electric leakage before flowing this electric current and restricting the movement of the beast to be captured by the fixture Which can easily be fainted by the power supply device and the power supply method.SOLUTION: One or a plurality of electrode bodies 13, 13 a to be brought into contact with at least one of a fixing tool Z and a boar X, a pair of electrode bodies 13, 13 a and a wild boar X with respect to a wild boar X whose movement is restricted by a fixing tool Z A judging section 22 capable of setting a current to be supplied into the closed circuit C including the leakage current to an energization pattern capable of detecting the presence or absence of electric leakage, and a changeover switch 11, 11 a for performing an on / off operation of a current into the closed circuit C An operation tool, and a power supply section 20 for supplying a current to the closed circuit C(FIG.【課題】本電流を流す前に漏電の有無を捕獲作業者等に感知させることで捕獲作業者等が本電流により感電することを防止すると共に、固定具により捕獲対象獣の動きを制限したことによって容易に失神させることができる通電装置及び通電方法を提供する。【解決手段】固定具Zにより動きが制限されたイノシシXに対し、固定具ZとイノシシXの少なくとも一方に当接させる1又は複数の電極体13、13a、電極体13、13aとイノシシXを含む閉回路C内に供給する電流を、漏電の有無が感知可能な通電パターンに設定可能な判断部22、及び閉回路C内への電流の入切操作を行う切替えスイッチ11、11aを有する通電操作具と、閉回路Cへの電流を供給する電源部20とを備える【選択図】図1