Wiring A 30amp RV Outlet - Ground & Neutral
I wired up a 30amp plug in my barn this weekend to power the travel trailer when it’s in the driveway. My barn is wired with a 100amp service breaker cabinet off the house main service, which was ins...
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After further research, the neutrals in the barn sub panel are NOT bonded to the sub panel box with the single green bonding screw. I was in error, as I saw a green screw at the top of each neutral terminal bar to the cross bar that ties them together. In the electrical world, green means “ground”. I ASSumed those screws bonded the neutral to the cabinet.
So, the barn sub panel is not independently grounded to the earth with a ground rod. There is NO ground terminal strip in the barn sub panel. The ground from the house to the barn sub panel lands on a neutral bar in the sub panel, as does the ground wire from the house, as well. Do, in any event, the neutral and ground in the barn sub panel are only tied back to the house main panel.
As I see it, will need to install a ground strip in the barn sub panel, a #6 ground wire to a ground rod outside the barn, and terminate the ground from the house panel to the ground strip in the sub panel. Then, all grounds in the sub panel, which there is only one for the RV plug, will terminate to the ground strip. I have no other grounds in the sub panel as I used EMT, which grounds back to the sub panel. - which is a better reason to get the sub panel independently grounded.
Last plan is to install a ground stud on the metal siding of the barn and wire it to the ground strip in the barn sub panel to bond it all together..
So, the barn sub panel is not independently grounded to the earth with a ground rod. There is NO ground terminal strip in the barn sub panel. The ground from the house to the barn sub panel lands on a neutral bar in the sub panel, as does the ground wire from the house, as well. Do, in any event, the neutral and ground in the barn sub panel are only tied back to the house main panel.
As I see it, will need to install a ground strip in the barn sub panel, a #6 ground wire to a ground rod outside the barn, and terminate the ground from the house panel to the ground strip in the sub panel. Then, all grounds in the sub panel, which there is only one for the RV plug, will terminate to the ground strip. I have no other grounds in the sub panel as I used EMT, which grounds back to the sub panel. - which is a better reason to get the sub panel independently grounded.
Last plan is to install a ground stud on the metal siding of the barn and wire it to the ground strip in the barn sub panel to bond it all together..
