Hot water tank for preparing hot water, has enameled container, electrical heating element, and foreign current anode comprising integrated earthing point for foreign current anode and wire, sleeve provided around foreign current anode

摘要

The hot water tank has an enameled container, an electrical heating element, and a foreign current anode (1) comprising an integrated earthing point for the foreign current anode and a wire (3). A sleeve is provided around the foreign current anode for insulating the foreign current anode. An electronic unit switches the foreign current anode between an earthing connection and an anode current connection. An anode protective circuit is coupled with the foreign current anode, and comprises a resistor in series to the foreign current anode and a diode in series to the resistor.