The live wire and neutral wire in the power cord enter the water heater through the leakage protector. When the water heater is in working state, once the residual action current is generated by the leakage of internal devices, the leakage protector can cut off the power supply within 0. 1 sec, and prevent the current from continuing to enter the water heater.
The power cord of the water heater also contains a ground wire. Theoretically, a ground wire is also set to ensure the safety of electricity use. However, if the grounding is unreliable, the hot wire and ground wire are connected reversely during decoration, and the line is aging, etc., because the leakage protector cannot cut off the ground wire, the current may directly drive the water heater through the ground wire, and the electric shock accident is inevitable.
Extended data:
Precautions:
1. When using the electric water heater, turn on the power supply and the indicator light is on, indicating that electric heating is being carried out. When the water temperature reaches the set value, the indicator light goes out, indicating that the power supply is cut off. The indicator light goes on and off, indicating automatic heat preservation.
2. The electric water heater (water storage type) should be filled with water first, then electrified and heated, and can be used after preheating. In case of water pressure drop or sudden water stop, it is best to turn off the power supply.
3. Electric water heaters are equipped with faucets and backflow devices, usually blue for cold water and red for hot water. When in use, turn on the red faucet and hot water will flow out. At this time, if the water temperature is too high, you can unscrew the blue faucet at the same time to adjust the water output, so as to obtain hot water with appropriate temperature.
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