About the 220 adaptor from Multiplaz

[Rob Taylor]

http://shop.multiplaz.com/220adaptor.aspx

I am curious how this works? It seems to me that the two 110 volt receptacles would normally have to be hooked up to different phases of the
220 supply in order to double up. Is this device doing something more?

Thanks,
Robert Taylor

[Iwerk]

220 is single phase.  

The way that it works, is the transformer coming into your house has a center tap.  

You can draw 110 from either side of the transformer to the center tap.  

You can draw 220 by using both ends of the transformer without using the center tap.

[Rob Taylor]

Thank you for that Iwerk.

I was looking at the way that the 120 volt outlets are usually configured. Some of them come off of one side of the transformer and some from
the other side. Unless the two 120 volt outlets that you use are from separate sides of the transformer they will not add up to 240 volts because
they will be on the same side of the 240 volt sine wave. Voltage being the potential difference between the two, if they were on the same side of
the sine wave there would be 0 difference between the two. http://www.science.smith.edu/~jcardell/Courses/EGR220/ElecPwr_HSW.html

So, my question was, how does the 220 adapter from Multiplaz work. Does it tell you that 2 outlets are on the same side of the sine wave or on different sides, or
do you just keep trying outlets until it works? Or is it something more and somehow does some sine wave alteration so that any 2 outlets work?

Thanks,
Robert Taylor

P.S. Yes in my original post I mistakenly used the term phase when I should have said opposite sides of the sine wave or separate wires from the transformer.
My understanding of the term phase needs to be mentally remapped in my brain to be more accurate, I mistakenly have always thought of the phase as referring to different
sides of a single sign wave. :)

[Angel villanueva]

M220 Adapt Diagram.

[Rob Taylor]

Thank you Angel, This is almost exactly as I imagined it would work.
Take Care,
Robert Taylor

[Angel villanueva]

Your welcome! If you would like any other diagrams or charts for anything feel free to mention it and I will make and post them.