Electronic – China single and 3 phase

power supply

What are the differences in number of conductors between single phase and the 3 phase used in China as compared with what is used in the U.S.A.?
It's my understanding that 220v residential is strictly a single hot and a neutral. Is their line 220v on a single leg? I've got some Chinese equipment to wire and it appears that have 1 leg hot in their equipment while the other leg on the 220v breaker is tied to the neutral.

Best Answer

China is similar to most of the EU. Phase-to-phase voltage for 3-phase is 380V 50Hz; Phase-to-neutral is 220V. Wye (4 conductor) and delta (three conductor) are supported; for a residence it would always include a neutral.

The standard single-phase wall plug has one 220V hot and a neutral, and optionally a safety ground.