A mounting assembly for an inverter, characterized by comprising: a waterproof component configured to be mounted on a wall surface, wherein the waterproof component comprises: a first side; a second side, wherein the first side and the second side are opposite to each other, the first side is adapted to face the inverter, and the second side is adapted to face the wall surface; at least one opening running through the first side and the second side and adapted to spatially correspond to a wire outlet on the wall surface and a wire port of the inverter; and at least one gasket set (216, 217) disposed around the periphery of the at least one opening, wherein when the inverter is mounted on the wall surface, the at least one opening is aligned to the wire port, the at least one gasket set (216, 217) abuts against the wall surface and the inverter, respectively, and the inverter is in electrical connection with a wire running through the wire outlet, the at least one opening and the wire port; and a fixing component configured to be disposed on the wall surface and connected to the waterproof component, wherein the fixing component comprises: a third side; a fourth side, wherein the third side and the fourth side are opposite to each other, the third side is adapted to face the inverter, and the fourth side is adapted to face the wall surface; and at least one first engaging element adapted to spatially correspond to at least one second engaging element of the inverter, wherein the at least one first engaging element and the at least one second engaging element are able to engage with each other to mount the inverter on the wall surface. a waterproof component configured to be mounted on a wall surface, wherein the waterproof component comprises: a first side; a second side, wherein the first side and the second side are opposite to each other, the first side is adapted to face the inverter, and the second side is adapted to face the wall surface; at least one opening running through the first side and the second side and adapted to spatially correspond to a wire outlet on the wall surface and a wire port of the inverter; and at least one gasket set (216, 217) disposed around the periphery of the at least one opening, wherein when the inverter is mounted on the wall surface, the at least one opening is aligned to the wire port, the at least one gasket set (216, 217) abuts against the wall surface and the inverter, respectively, and the inverter is in electrical connection with a wire running through the wire outlet, the at least one opening and the wire port; and a first side; a second side, wherein the first side and the second side are opposite to each other, the first side is adapted to face the inverter, and the second side is adapted to face the wall surface; at least one opening running through the first side and the second side and adapted to spatially correspond to a wire outlet on the wall surface and a wire port of the inverter; and at least one gasket set (216, 217) disposed around the periphery of the at least one opening, wherein when the inverter is mounted on the wall surface, the at least one opening is aligned to the wire port, the at least one gasket set (216, 217) abuts against the wall surface and the inverter, respectively, and the inverter is in electrical connection with a wire running through the wire outlet, the at least one opening and the wire port; and a fixing component configured to be disposed on the wall surface and connected to the waterproof component, wherein the fixing component comprises: a third side; a fourth side, wherein the third side and the fourth side are opposite to each other, the third side is adapted to face the inverter, and the fourth side is adapted to face the wall surface; and at least one first engaging element adapted to spatially correspond to at least one second engaging element of the inverter, wherein the at least one first engaging element and the at least one second engaging element are able to engage with each other to mount the inverter on the wall surface. a third side; a fourth side, wherein the third side and the fourth side are opposite to each other, the third side is adapted to face the inverter, and the fourth side is adapted to face the wall surface; and at least one first engaging element adapted to spatially correspond to at least one second engaging element of the inverter, wherein the at least one first engaging element and the at least one second engaging element are able to engage with each other to mount the inverter on the wall surface.