Warp wrote:
> Orchid XP v8 <voi### [at] devnull> wrote:
>> Nope. As the Wikipedia article explains, there are sprung-loaded plastic 
>> covers that only move out of the way as the earth pin is inserted.
> 
>   Is it guaranteed that the difference in potential between the earth pin
> and the physical ground is always very close to zero?
> 

Some non-electricians will hook up the earth as a common - using it as 
the return path for the hot.

In this case the potential will vary with the amount of current on the wire.

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