The "anti-electricity wall" makes use of the resistance of the water itself (for example, the national standard stipulates that the resistivity of tap water should be greater than 1300ΩNaN at 15°C). Through the selection of insulation materials for the water pipes in the electric water heater, This creates an "isolation wall" between the pipe diameter and the pipe wall. When the water heater is powered on, even if the water in the heating tank has electricity, it will be attenuated by the resistance of the water itself when passing through the "anti-electricity wall" to achieve the purpose of isolating the resistance, so that the resistance between the inlet and outlet of the water heater is almost zero. The voltage and extremely weak current below 0.02mA/kw are much better than the national standard of 0.25mA/kw. When for some reason, the water in the water heater tank has a voltage of 220V, and the water flowing out of the ordinary water heater passes through the human body, a voltage difference of 220V will be formed on the human body, which will cause great harm to the human body, and Haier For anti-electric wall water heaters, the water in the tank does not flow out directly, but flows out after passing through a relatively long water pipe. As the length of the pipe increases, the resistance of the water in the pipe also increases, so that the water in the tank does not flow out directly. Water flows through a long pipeline and then flows to the human body, which is equivalent to a series circuit. Because the pipeline is relatively long, its resistance value is relatively large, and the partial pressure on it is quite high, and then the partial pressure on the human body is Relatively speaking, it is relatively low. After calculation, the partial voltage on the human body is about 12V. This voltage will not cause any harm to the human body, thus effectively ensuring people's safety.