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Power Supply Grounding Question.

C

CDdude55

Gawd
Joined
Jan 4, 2007
Messages
572
Do you have to plug the power supply into the power outlet to ground yourself? (if so does the switch have to be off or on or it doesn't matter?) Or can you keep it unplugged but still touch it and be grounded?
 
Basically, when you have the cord plugged in to an outlet, the psu and case are then grounded to the building electrical grounding system, regardless if the switch is on or off. The ground wire is not switched, but continuous from outlet to psu and case.

When you touch the case, the case being grounded or not, you bring yourself to the same potential as the case, no voltage between you and the case. (Difference in potential is voltage)

Not sure why you are asking, however if you are working on your components, it's not a bad idea to leave the psu plugged in and the switch off. In any circumstance, always keep in touch with the case to avoid a difference in potential, which is voltage and can possibly damage components. Unless of course, you are replacing the psu, then by all means unplug it, lol. Over the years however I have been told to always disconnect the cord while doing any component work, but that was when psu's had no on off switch.
 
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