The thing is, if there were constant sparks then there must be something wrong with the wall wart also unless there are also two separate circuits in the room where the wall wart is plugged into one and the computer is plugged into the other and the two outlets are wired to different line phases.
Wall warts that have the right isolation rating and work normally will not spark no matter how a single outlet is wired. That's because the output is electrically isolated from the input.
If you dont agree then try to show how an outlet can be wired to make a normally functioning wall wart cause a spark on the output when the output ground touches anther ground.
Wall warts that have the right isolation rating and work normally will not spark no matter how a single outlet is wired. That's because the output is electrically isolated from the input.
If you dont agree then try to show how an outlet can be wired to make a normally functioning wall wart cause a spark on the output when the output ground touches anther ground.