Possible Converter Damage After Supplying 240 Volts to a 30 Amp RV Trailer
Updated 06/16/2026 | Published 06/14/2026
Question:
Im pretty sure i fried my converter, a neighbor set up a electrical box for my 30 amp trailer. Its 2006 Gulf Stream Conquest dont have the specific number right yet but can get what need for the right replacement. I think we ran 240 to the camper and its 110 Volt to 125 Volt, thats why I think it fried it. Unless theres a fuse to protect it from do that. Your reply is welcomed.
asked by: Ken T
Expert Reply:
Hi Ken,
I'm sorry to say, if 240 volts was accidentally supplied to a 30 amp RV that is designed for 120 volt service, it is possible that the converter was damaged. In some cases, fuses or circuit breakers will protect certain components, but an overvoltage event like that can still damage the converter along with other electronics such as the microwave, air conditioner control board, refrigerator control board, TV, or battery charger circuitry.
Before replacing anything, I would recommend checking the RV's AC breakers and DC fuses to see if any have blown. If the converter is no longer charging the battery or providing 12 volt power to the coach, that's a strong indication that it may have been damaged.
The good news is that we can help identify the correct replacement converter. When you have a chance, send over the make and model number of your existing converter or a photo of the converter label. Once we have that information, we can determine the proper replacement and whether there are any upgraded options available.
Out of curiosity, after the trailer was plugged in, what stopped working first? Did you lose all 12 volt power, or are there other appliances that seem affected as well?
Product Page this Question was Asked From
Progressive Dynamics 9300 Series RV Converter Charger - 12V - 45A
- RV Power Converter
- Converter Only
- No Battery Mode Switch
- 12V
- 45 Amps
- AGM
- Lead Acid
- Lithium
- Multi-Stage Charge
- Progressive Dynamics
more information >
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Ken T.
6/16/2026
You have good advise. Thanks. The first thing that blowed was the breaker in the house. Then I turned it back on and it stayed on. But, nothing in the trailer worked but the outlets. I coundnt understand why the lights wouldn't work. Then talked to a real electrician and he said I only need one breaker in the house. The other guy set up two breakers with 10 - 2 wire. So that sent 240 into the trailer. Today I fully chargered the battery and now the lights work. Yay. I'll change the converter next.