An outside unit of an air conditioner comprising: a case having an electric chamber in which an electric part is provided and a heat exchange chamber in which a heat exchanger is provided, wherein the electric part comprises: an electric panel (80, 90) at which an electric component (71, 72, 73, 75, 78, 79) is provided, a terminal block provided at one side of the electric panel, the terminal block comprising a first terminal part and a second terminal part, a first cable connected to the first terminal part and providing power or a signal to the electric component (71, 72, 73, 75, 78, 79), a second cable extended from outside of the outside unit and connected to the second terminal part, and a fixing member that is spaced apart from the terminal block and supports the second cable, and wherein the electric panel comprises: an installation part at which the electric component (72, 78) is provided, and a supporting surface at which the terminal block is supported, characterized in that: the supporting surface and the installation part are spaced apart horizontally with a greater distance between them than the height of the terminal parts (230A, 230B) from the supporting surface, an opening part is formed at an upper side of the supporting surface in the space between the installation part and the supporting surface, the installation part is provided at an upper side of the opening part, the opening part opens vertically at one portion of the electric panel, and the first cable is extended from the terminal block and through the opening part to the electric component. a case having an electric chamber in which an electric part is provided and a heat exchange chamber in which a heat exchanger is provided, wherein the electric part comprises: an electric panel (80, 90) at which an electric component (71, 72, 73, 75, 78, 79) is provided, a terminal block provided at one side of the electric panel, the terminal block comprising a first terminal part and a second terminal part, a first cable connected to the first terminal part and providing power or a signal to the electric component (71, 72, 73, 75, 78, 79), a second cable extended from outside of the outside unit and connected to the second terminal part, and a fixing member that is spaced apart from the terminal block and supports the second cable, and an electric panel (80, 90) at which an electric component (71, 72, 73, 75, 78, 79) is provided, a terminal block provided at one side of the electric panel, the terminal block comprising a first terminal part and a second terminal part, a first cable connected to the first terminal part and providing power or a signal to the electric component (71, 72, 73, 75, 78, 79), a second cable extended from outside of the outside unit and connected to the second terminal part, and a fixing member that is spaced apart from the terminal block and supports the second cable, and wherein the electric panel comprises: an installation part at which the electric component (72, 78) is provided, and a supporting surface at which the terminal block is supported, characterized in that: the supporting surface and the installation part are spaced apart horizontally with a greater distance between them than the height of the terminal parts (230A, 230B) from the supporting surface, an opening part is formed at an upper side of the supporting surface in the space between the installation part and the supporting surface, the installation part is provided at an upper side of the opening part, the opening part opens vertically at one portion of the electric panel, and the first cable is extended from the terminal block and through the opening part to the electric component. an installation part at which the electric component (72, 78) is provided, and a supporting surface at which the terminal block is supported, characterized in that: the supporting surface and the installation part are spaced apart horizontally with a greater distance between them than the height of the terminal parts (230A, 230B) from the supporting surface, an opening part is formed at an upper side of the supporting surface in the space between the installation part and the supporting surface, the installation part is provided at an upper side of the opening part, the opening part opens vertically at one portion of the electric panel, and the first cable is extended from the terminal block and through the opening part to the electric component. the supporting surface and the installation part are spaced apart horizontally with a greater distance between them than the height of the terminal parts (230A, 230B) from the supporting surface, an opening part is formed at an upper side of the supporting surface in the space between the installation part and the supporting surface, the installation part is provided at an upper side of the opening part, the opening part opens vertically at one portion of the electric panel, and the first cable is extended from the terminal block and through the opening part to the electric component.