Power the AC with household circuit

EnzoColorado wrote:
My trailer's AC won't run unless it's plugged into an external 30 amp power source like full service campgrounds. At home I use an adapter to plug into my house's outdoor outlet, which will run everything but the AC. I think the house circuit is 15 amp. Is it possible to find a Y adapter to plug in two house extension cords (from two different circuit) into the trailer to run the AC?

Please tell us what happens when everything except the roof A/C is off and you try to run it on your home 120 VDC/15 amp outlet.

CRITICALLY-- WHAT IS THE VOLTAGE as measured at any outlet in the RV?

As stated, the roof air WILL run on a properly wired (large enough gauge wire that you don't have a large voltage drop)15 amp power source.

I have a 15K BTU A/C Unit and have run it off a 15A outlet many times

You need to check what else is on your 15A house breaker and turn those items off so the 15A outlet is only feeding your RV
Turn fridge and water heater AC breakers off in RV main AC Panel (so that have propane only)

And let converter fully charge battery ---go into float mode before trying to turn RV A/C Unit on.
Might need to turn A/C Fan on first---place it in High Speed before lowering T-stat set point where A/C Compressor will start


Unless you upgraded the A/C the standard/stock unit is a 13.5Kbtu so 15A should run it.
Just need to isolate/limit what else is on

The device does not exist.

If you look at the RV breaker panel, you will find the A/C unit is probably on a 20 amp circuit, maybe 15. As such there is no reason your A/C unit shouldn't operate on a household 20 amp circuit providing nothing else is on the circuit.

I’m sure the house is served by only one phase but you need more than 15 amps so you must start at your breaker box and run a heavier cable to a new 30 or 50 amp outside outlet. If you take care of running the wire you will only have to pay the electrician for a couple of hookups. Electricians are usually generous with free advice for this kind of thing because they want it to go well and aren’t very keen on the unskilled parts of the work. If not, buy a simplified electrical code book or check the library for one and read the rules for running wires. You can use an outdoor outlet box mounted on the outside so only a hole through the wall between floor joists for the wire is needed.

I would not recommend it. You could end up with a direct short.

Turn off all circuit breakers in the RV EXCEPT MAIN and A/C and try it
Use a 12ga Extension cord

Alternate.

Plug in, wait several hours for the converter to bring the batteries up to charge and turn off everything EXCEPT the AC and Converter (And main of course).

jkwilson wrote:
Such a device wouldn't really be safe. If you plugged into two outlets on different phases, things wouldn't go well. Best to have an electrician install a 30A outlet and avoid any issues.

Thanks, better to be safe.

Such a device wouldn't really be safe. If you plugged into two outlets on different phases, things wouldn't go well. Best to have an electrician install a 30A outlet and avoid any issues.