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 > AC on 20 amp service?

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helperzack

Port St. Lucie, FL

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Posted: 07/15/08 08:30am Link  |  Quote  |  Print  |  Notify Moderator

We are currently parked in my sister in law's driveway visiting everyone in Tennessee. I have a heavy duty extension cord which I use to keep the batteries charged and the fridge cold while parked here. Using the normal adapters up to my 50 amp plug.

When we need the A/C, I would go out, unplug from the house and plug into the generator and run it when needed, then go back to the house outside outlet when we didn't.

My question rises from yesterday, I disconnected the gen. and plugged into the outside outlet at the house, however, I did not notice that the rear A/C was still turned on but not running. I went into the house to come out and the A/C was running, I ran in to turn it off and the motor home was nice and cool. I went out and checked the cord for heat, but there was none. The outside circuit is on a 20 amp breaker. Is it OK to run the A/C on this? One would think that it would trip it if not.... Hopefully this would not cause any problems.

Your help is greatly appreciated.


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ernestfortier

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Posted: 07/15/08 08:35am Link  |  Quote  |  Print  |  Notify Moderator

It works for me as long as the frig is on propane and the electric water heater is off. The AC unit doesn't take that much power to run it.


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ADAD437

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Posted: 07/15/08 08:35am Link  |  Quote  |  Print  |  Notify Moderator

ac will run on that as long as you do not turn on any other appliance.
AC should only pull about 13- 15 amps.


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JFG

TN

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Posted: 07/15/08 08:42am Link  |  Quote  |  Print  |  Notify Moderator

One ac will draw about 14 amps so you can run one ac with a good heavy duty cord ... 12 ga wire. I wouldn't try to run any other electric as you converter or inverter will also be consuming power from the 120.


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pulsar

Lewisville, NC

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Posted: 07/15/08 08:48am Link  |  Quote  |  Print  |  Notify Moderator

Moved from Technology Corner to Tech Issues.


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hershey

Albuquerque,(fulltime) NM, USA

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Posted: 07/15/08 08:58am Link  |  Quote  |  Print  |  Notify Moderator

I park regularly at a site that has only 20 amps. I cut my convertor back to 5 amps and run everything off of the 20 amp circuit. By monitoring the high usage items and running only the microwave, water heater, AC one at at time. Works for me very well.


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jauguston

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Posted: 07/15/08 09:01am Link  |  Quote  |  Print  |  Notify Moderator

It should work fine unless your batteries are low and the converter is drawing a bunch of power. Worst case it will pop the breaker on that circuit in the house panel.

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smkettner

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Posted: 07/15/08 09:04am Link  |  Quote  |  Print  |  Notify Moderator

Check your a/c breaker in the RV. I bet it says 20 amp. That is all you need.
No matter if it is 15,20,30 or 50 amp service, check the voltage stays 110+ in the RV while the air is running.


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tvman44

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Posted: 07/15/08 09:04am Link  |  Quote  |  Print  |  Notify Moderator

Sure it will work, just turn off everything else in the RV including converter. My 15,000 BTU A/C draws 12 to 14 amps depending on the temperature, the higher the temp the higher the amp draw. So should be no problem.


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helperzack

Port St. Lucie, FL

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Posted: 07/15/08 10:05am Link  |  Quote  |  Print  |  Notify Moderator

Thanks everyone. I just wanted to make sure I was not going to cause a problem.


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helperzack

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