The grounding hole connected to the power socket of the soybean milk machine is connected to the general ground line of the home, so that the soybean milk machine is plugged into the socket and the shell is grounded.
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If there is no ground line at home, use galvanized steel pipe or galvanized Angle iron, drive at least 2 meters into the ground, the joint can be done anti-corrosion treatment, galvanized is not rust.
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If a point is not enough, you can make more than a few, and then use galvanized flat iron to connect
The L, M and H interface orientation on the circuit board of the soybean milk machine, L is connected to the power firewire, M is connected to the motor, and H is connected to the heating module. There is also an N, which is a common neutral line, generally on the other terminal of the heating tube. This is only a more common connection method, and does not mean that all soy milk machines are connected in this way.