Three wires go to the toaster. One wire is the hot wire. It’s always full of electricity. One wire is the neutral. When the toaster switch is OFF it has no electricity. When the switch is ON it completes a circuit and now it too, is hot.
The ground wire is not connected to these wires in any way. The ground wire is connected to the body of the toaster. A fork stuck in the toaster can touch the LIVE circuit and become an electrified FORK. The fork could kill you but the electricity takes the easy way to ground, the ground.
Both wires go to the ground. The neutral and hot wires are the active circuit. The ground wire is a safety device.
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