Q&A about electric faucets

Why does an electric water heater stop heating the water but still provide hot water at the faucet?

This is mainly because the water inside the water heater has been heated to a certain temperature. After the heating stops, the hot water remains in the tank for some time, using its heat to supply the faucet. So even though the electric water heater does not reheat, the hot water inside the tank can still be used until the water temperature drops to the lowest temperature set. This is also related to how much the faucet is used and how well the tank is insulated.

How does an electric heating kitchen fast instant hot water heater faucet work in terms of being connected to an electricity supply?

Instantaneous electric faucets work by directly heating the water flow through the power source, so it needs to stay connected to the power source in order to work properly. Its operation process is as follows:

1. Power connection: Instantaneous electric hot water faucet usually needs to be connected to the home's electrical system, using 220V-240V power supply, depending on the design of the device. It is connected to an outlet or circuit through a power cord to ensure a stable power supply.

2. Heating process: When the faucet is turned on, water begins to flow through the electric heating tubes or heating elements within the heating unit. These heating elements are powered by the mains and once the water flows through, it will immediately heat the water to the set temperature.

3. Temperature control and protection mechanism: Instantaneous electric faucets are usually equipped with a temperature control device and an overheating protection device to ensure that the water temperature is maintained within a safe range. If the temperature is too high, the device will automatically disconnect the power supply to prevent overheating. Also, if it detects that the water flow has stopped, the electric heating element stops heating to conserve energy and prevent dry burning.

The advantage of this design is that the faucet provides hot water quickly, saving time and energy by not having to wait for the tank to heat up.

If an electric tester glows red if touched to a hot water faucet metal surface, then is it a matter of concern?

If an electrical test instrument comes into contact with the metal surface of a hot water faucet and emits a red light, this is usually a warning sign. The red light may indicate the following:

1. electrical leakage: there may be an electrical malfunction that is causing current leakage, requiring immediate inspection of the circuit and equipment.

2. grounding problems: metal surfaces are not properly grounded, which may lead to safety hazards.

3. Instrument failure: there may be problems with the test instrument itself, you need to make sure it is working properly.

It is recommended that the power supply be cut off immediately and a professional electrician be called to carry out an inspection to ensure safety.