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In North American residential homes, there are 3 wires coming from the utility company, two "hots" and neutral.

The two "hot" conductors get connected to the main breaker. The neutral gets connected to the neutral bus bars located along the sides of the breaker box.

There is a set screw that is placed in the neutral bar that screws into the distribution panel enclosure thereby bringing the potential of the neutral bars down to zero.

The wire from your ground rod is also connected to the neutral bus bar, and thereby it is connected to the neutral from the power company. This is also often bonded to the copper cold water Plumbing in the house if the home is not plumbed in PVC water pipe.

White circuit wires are then connected to the neutral bus bars. Also in the distribution panel are ground bus bars.

The ground wires from circuit cables are connected to these grounding bars. Do not under any circumstance terminate the white and bare ground wires together.

Ground wires to the ground bar and white wires to the neutral bar.

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