[yray]

Originally Posted by Hehe

I am not understanding what you said.

From what I saw, the electrician changed the wires that was running to the plugs, also the socket to an appropriate one for the voltage, changed some wiring in the panel and I had 220v running on those plugs. I don't think there's any hardware that actually converts 110v to 220v at panel. I felt that it's like he flipped a switch and it was running at 220v... only had to update the wires to be up to code.

So my question was, if my in-law were to do that same thing in reverse for his apt in China (getting a few 110v outlets out of a panel that's 220v standard), will the process be similar or it's a lot more work (hence money) ?

north america is basically 2x 110v hot wire with one neutral to make 240v

I believe china is a bit different, the hot is already 220v/240v so only way is to step down transformer to get 110v.