A photovoltaic module comprising: a solar cell module; a converter to convert a direct current voltage from the solar cell module; an inverter to convert the DC voltage from the converter into an alternating current voltage; a plug to outwardly output the AC voltage from the inverter; an AC power cable between the inverter and the plug, wherein the photovoltaic module further comprises: a junction box including the converter and the inverter; a conductive member electrically connecting a frame of the solar cell module and a frame of the junction box, the AC power cable has first and second power lines (320b, 320c) and a ground line, the first and second power lines (320b, 320c) being respectively connected to first and second power terminals (310b, 310c) of the plug, the ground line being connected to a ground terminal of the plug, wherein the ground line of the AC power cable is electrically connected to a ground terminal of the inverter, wherein a ground line of the solar cell module is electrically connected to any one solar cell string among a plurality of solar cell strings in the solar cell module; wherein the ground line of the solar cell module extends to the back surface of the solar cell module and is electrically connected to the frame of the solar cell module, wherein the ground terminal of the inverter is electrically connected to the frame of the junction box, and wherein the ground line of the solar cell module is electrically connected to the ground terminal of the plug through the frame of the solar cell module, the frame of the junction box and the ground terminal of the inverter. a solar cell module; a converter to convert a direct current voltage from the solar cell module; an inverter to convert the DC voltage from the converter into an alternating current voltage; a plug to outwardly output the AC voltage from the inverter; an AC power cable between the inverter and the plug, wherein the photovoltaic module further comprises: a junction box including the converter and the inverter; a conductive member electrically connecting a frame of the solar cell module and a frame of the junction box, the AC power cable has first and second power lines (320b, 320c) and a ground line, the first and second power lines (320b, 320c) being respectively connected to first and second power terminals (310b, 310c) of the plug, the ground line being connected to a ground terminal of the plug, wherein the ground line of the AC power cable is electrically connected to a ground terminal of the inverter, wherein a ground line of the solar cell module is electrically connected to any one solar cell string among a plurality of solar cell strings in the solar cell module; wherein the ground line of the solar cell module extends to the back surface of the solar cell module and is electrically connected to the frame of the solar cell module, wherein the ground terminal of the inverter is electrically connected to the frame of the junction box, and wherein the ground line of the solar cell module is electrically connected to the ground terminal of the plug through the frame of the solar cell module, the frame of the junction box and the ground terminal of the inverter. a junction box including the converter and the inverter; a conductive member electrically connecting a frame of the solar cell module and a frame of the junction box, the AC power cable has first and second power lines (320b, 320c) and a ground line, the first and second power lines (320b, 320c) being respectively connected to first and second power terminals (310b, 310c) of the plug, the ground line being connected to a ground terminal of the plug, wherein the ground line of the AC power cable is electrically connected to a ground terminal of the inverter, wherein a ground line of the solar cell module is electrically connected to any one solar cell string among a plurality of solar cell strings in the solar cell module; wherein the ground line of the solar cell module extends to the back surface of the solar cell module and is electrically connected to the frame of the solar cell module, wherein the ground terminal of the inverter is electrically connected to the frame of the junction box, and wherein the ground line of the solar cell module is electrically connected to the ground terminal of the plug through the frame of the solar cell module, the frame of the junction box and the ground terminal of the inverter.