It only takes about 10v of static electricity to damage micro circuitry in a PC. The beating of your heart and breathing generates static electricity. I, personally, use a wrist strap that I plug directly into the earth lug in a properly grounded wall outlet. If you chose to unplug the PC to work on it, it is important to make sure that you are grounded through some other grounded device. If the PC is grounded (plugged in) and you touch the case, the electricity goes straight to earth through the earth lug in your power cable, plugged into the wall outlet (that is assuming your outlet is properly wired). When you unplug the PC, you remove the path to earth ground.Įlectricity takes the path of least resistance. When it is unplugged, the static electricity will find its way to the micro circuitry inside the PC. In order to ground yourself to the PC, the PC MUST be plugged in. We've gone a little off topic here but this is important.
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