Where should this white wire be connected? Found it like this.

[rufusd7]

See picture:

[John Ware]

Probably to the buss bar that's under the inverter.

[rufusd7]

Originally Posted by John Ware

Probably to the buss bar that's under the inverter.

Thank you! I will check it out.

I am quite familiar with home wiring (e.g., when to (or not) bond neutral to ground in a panel, etc.). How are ground and neutral handled in an Airstream?

Edit: Also, this is a neutral?

[John Ware]

If it's 12v it's a ground. If it's 110v it's a neutral. They both connect to the frame.

[rmkrum]

Originally Posted by John Ware

If it's 12v it's a ground. If it's 110v it's a neutral. They both connect to the frame.

120 volt AC Neutral in an airstream absolutely DOES NOT AND MUST NOT connect to the frame. Per National Electrical Code (NEC) it has to connect to the isolated neutral bus bar in the 120 volt panel. The green ground or bare wire (safety earth) does connect to the frame.

The neutral and ground have to be bonded together outside the trailer only at the power supply connector, be it pedestal or generator.

That’s probably a 12 volt DC ground, but you need to verify that carefully.

[AKNate]

Neutrals do not connect to the frame. Doing so will create a ground fault and trip any GFI you plug into. It could also cause you to get shocked touching the metal of your camper. Neutrals should only ever be grounded at a single point at the source, which is the service entrance at your house or the rv park.

[rufusd7]

Originally Posted by AKNate

Neutrals do not connect to the frame. Doing so will create a ground fault and trip any GFI you plug into. It could also cause you to get shocked touching the metal of your camper. Neutrals should only ever be grounded at a single point at the source, which is the service entrance at your house or the rv park.

This makes sense. I assume the whites are unconnected neutrals. Strange that I haven’t noticed any issues. I found 2.

[AKNate]

They are most likely DC wires. I can’t recall any places Airstream uses individual wires for AC. Everything seems to be romex for the AC, but there could be some somewhere. There are pre-wires for solar and other options depending on your model like electric stabilizers that can just be laying around if you don’t have those options. My guess is it’s one of those if everything seems to work fine. Do the stands of the wire look like they used to be terminated or do they look clean and unbent?

[John Ware]

Originally Posted by rmkrum

120 volt AC Neutral in an airstream absolutely DOES NOT AND MUST NOT connect to the frame. Per National Electrical Code (NEC) it has to connect to the isolated neutral bus bar in the 120 volt panel. The green ground or bare wire (safety earth) does connect to the frame.

The neutral and ground have to be bonded together outside the trailer only at the power supply connector, be it pedestal or generator.

That’s probably a 12 volt DC ground, but you need to verify that carefully.

I was in the shower just now when it hit me that I had misspoke. The green or bare wires go to the frame as does the 12v ground wire. The 110v white neutral goes back to the 110v source where they are bonded to the bare wires. Sorry for the mistake. Sometimes my brain and my typing get out of synch.

[AKNate]

If only Airstream labeled their wires and didn’t end them in a rats nest…