green & white wires

I have a power strip that was damaged by water and causes the fuse to 
blow with certain configurations.  I pulled the cord out of it to 
salvage.  The strip includes USB connections for powering phones etc.

I just want to clarify this:  The strip has three wires going to it. 
One is black, one is white, and one is green.  Isn't the green wire the 
power connection for outlets and the white power to the USB?  Or is it 
the other way around?  I know what the black wire is for.
-- 
"It will be a long
And difficult war
It will be conducted
On many fronts
But as long as it takes
We will prevail
Across the world governments
Have heard this message
You're either with us or you're with the terrorists
Tyranny
Terror
& Lawless Violence"
    -- George W. Bush