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Neutral and Ground Wires in a Sub Panel


By Dave Rongey - Summary:

How to Configure the Neutral and Ground Wires in a Sub Panel – In a sub-panel the Neutral Wires must be separated from the Ground Wires and may not be terminated on the same buss, regardless if the ground wire is insulated or not.

Separation of Neutral and Ground Wires in Sub Panels

Electrical Question: We are considering buying a manufactured cabin that has a Jacuzzi tub. The neutrals and grounds are tied together on the same bus in the sub panel. One home inspector said they need to be separated, the other said they are fine since they are both insulated and are grounded at the main panel. Which is correct?

This electrical question came from: Dan, from Big Bear City, California

Dave’s Reply:
Thanks for your electrical  question Dan

How to Configure the Neutral and Ground Wires in a Sub Panel

In a sub-panel the Neutral Wires must be separated from the Ground Wires and may not be terminated on the same buss, regardless if the ground wire is insulated or not. This is especially true for manufactured homes and mobile homes where a 4-wire system whereby the neutral and ground wire separation is essential.

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