Electrical Issue

Is your rig a 30 or 50 amp?
Possible you fried the converter or inverter, if equipped.
What type of receptacle did you plug into? Are you using an adapter?

. It looks like the ground wire is scorched.

Are you talking about the adapter between house and trailer?

What ground wire is scorched? If it is the 120v to the pedestal, your 120v appliances that do not need a ground can work on the hot and neutral.

You have lost 12v. Your battery should supply 12v without the converter unless it is disconnected or its fuse has blown.

What ground wire and where is burned/scorched? There are quite a few wires that could reasonably be called a ground wire.

Lights are 12V, as is the fridge control board if it's an RV fridge rather than a residential fridge. It sounds as though your 12V system isn't working.

It's a 30 amp. We plugged it into an regular 120 outlet using a extension cord and an adapter. If the converter was fried would the outlets and microwave still work?

Yes, burnt converter would only effect the 12 volt DC systems.

The ground wire coming out of converter going to the terminal block on the circuit breaker board is scorched

Battery was disconnected since not being used. If we hook it back up to a battery and fridge and lights work, then we can assume that converter is bad?

PepperDad51 wrote:
The ground wire coming out of converter going to the terminal block on the circuit breaker board is scorched

Assuming you mean the actual ground wire (and not the neutral), that suggests the converter had a short circuit in it and is most likely toast...which would certainly explain the lack of 12V power. There should be no current flowing over the ground wire, and no chance for it to heat.

It would be well to verify that the negative lead from the converter output to the chassis ground (or wherever it goes) is all good and solid. The converter is supposed to be wired such that the charge current won't flow through the AC ground wire, by being separately bonded to the chassis or something similar, but if that's not done properly or something and the DC negative output were compromised, it's conceivable that the charge current could end up flowing through the ground wire, and significantly overload it.

If it's the neutral wire, it may simply be a loose connection that became too loose and cleaning stuff up and replacing the toasty wire pieces and terminals it connects to (if they also show signs of overheating) could well solve the problem. In that case, the converter may well be undamaged.

PepperDad51 wrote:
The ground wire coming out of converter going to the terminal block on the circuit breaker board is scorched

That would be the 120v side of the converter, but some(all?) hard -wired converters only have a 120v black wire to the circuit breaker and a white wire to the neutral buss, no ground wire. They get grounded by their metal chassis to the power centre's metal chassis to the RV frame.

Is your converter "hard wired" ( not a cord with a plug on it into a receptacle) or are you using "converter" to mean "power centre" and talking about the bare copper shore power ground wire to the power centre chassis at the "main" breaker?