Can a 220V electric heating tube be connected to a 380V power supply?
If there is only one 220 electric heater, it cannot be directly connected to 380. If it is more than one, it is different. You can connect two single-phase 380 in series, so that each one has a voltage of 190 volts, and the single power will be slightly less than the rated power. If there are more roots, it can also be connected in a star form, so that each root is still 220 voltage.
