I need a little clarification regarding residential equipment grounding system. Any input would be appreciated.
It is my understanding that the neutral and the ground wires are bonded at the service box. Why wouldnt the electricity in the neutral wire (completing the circuit) run down into the ground wire where it is bonded at the service box instead of going out to the transformer. This could thereotically, create the whole grounding system to become energised by back flowing through the grounding circuit. Im not sure I understand what stops the ground wire from becoming energized if they are conducting and bonding to each other at the service box.
As with a sub-panel the ground and neutral are not allowed to be bonded as it may cause the grounding system to become hot. Whats the difference between the sub-panel that isnt allowed to be bonded and the service box that is bondin the neutral and ground. Thank you.