- If your Class-"y capacitor" , also called the"line to ground capacitor" or"the line bypass capacitor"--that the capacitor set between line and ground--fails brief, this might cause a deadly electrical shock on account of this loss of this floor connection. Class-Y safety capacitors are designed to fail . A collapse could make your electronic device to be exposed to this noise and interference that the capacitor would normally filter outside, but there will be no deadly electric shock hazard.If that a Class-"y capacitor" , also known as the"line to ground capacitor" or even"the line bypass capacitor"--the capacitor placed between ground and line --fails brief, this could cause a deadly electrical shock due to the loss of the ground relationship. Class-Y security capacitors are designed to fail . A collapse could make your electronic device to become exposed to this interference and noise that the capacitor would filter outside, however there isn't going to be a fatal electric shock hazard.