Common Issues/Questions

  • Why does my PC shock me?

    • If your mains are not grounded, there will be 3.5mA of power looking for a ground. When you touch a metal part of the PC, you become that ground. It’s perfectly safe, and normal, but you really should use a grounded outlet.

      Power supplies use “Y” capacitors connected from the neutral to ground as part of their integral EMI filter.  These specially rated capacitors provide a low impedance path to the ground for high frequency noise to reduce EMI. 

      Picture of a Y Capacitor