How to connect the 220V power supply to the 380V rice steamer?

When we test with a 220V voltmeter, if one of the three wires on the rice cooker is double, it is a 220V voltage wire. The remaining two, we see one thick and one thin, the thick is the zero line and the thin is the 380v line.

Extended data

When using three phases, it should be Y-shaped connection, that is, the zero line of every three phases and four wires is connected at the midpoint of Y, that is, one end point of each heating pipe is connected together to form the midpoint of Y, and the live wires of three phases are respectively connected at the three bifurcation nodes of Y, and each phase heating pipe still works at 220V V V. If it is changed to two phases, this principle is still the same. One end of the original connection is fixedly connected to the zero line, and the other three endpoints are also connected to the live line.

References:

Baidu encyclopedia-three-phase electricity