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Old 07-28-2014, 04:05 PM   #1
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Charging via 110 outlet

Hi folks you have been very helpful in my previous posts. Thanks. I have been charging my 3170DS using a extension cord. The other day I turned on the AC for about an hour. The cord became very hot. My question... what type of extension cord should I use (guage) and length. Is it okay to run the AC on 110 or should it only be while engine or generator is on? Thanks in advance.... hope you are enjoying the summer.


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Old 07-28-2014, 04:15 PM   #2
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Your unit is set up for either 30 Amp or 50 Amp. Is the 110 coming from your house either of these? Most house 110 outlets are 15 Amps. I believe that you are putting a large amount of strain on the AC unit if your 110 is only 15 Amps. The cords will get hot (and bad things may happen). Can you install a 30/50 Amp and wiring from your breaker box for you motor home

I never run my AC when I am plugged in to 110 15 Amps. I would not encourage anyone to do so with lower Amperage.
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Old 07-28-2014, 09:09 PM   #3
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Originally Posted by Brother Les View Post
Your unit is set up for either 30 Amp or 50 Amp. Is the 110 coming from your house either of these? Most house 110 outlets are 15 Amps. I believe that you are putting a large amount of strain on the AC unit if your 110 is only 15 Amps. The cords will get hot (and bad things may happen). Can you install a 30/50 Amp and wiring from your breaker box for you motor home



I never run my AC when I am plugged in to 110 15 Amps. I would not encourage anyone to do so with lower Amperage.

X2. AND if you do decide to upgrade your power, MAKE sure it is done correctly. 10 gauge 2 strand plus ground for 110 volt 30amp breaker. 8 gauge 3 strand plus ground for the 50 amp 220 breaker. If you do them wrong you will fry stuff.


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Old 07-28-2014, 10:34 PM   #4
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Don't run the AC on a standard extension cord as it will yield low voltage to the AC (result of the cord getting hot) and stress the AC compressor motor and burn it out. Kind of surprised your house circuit breaker didn't trip. Wiring in the house on that circuit probably got hot too.
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Old 07-28-2014, 10:39 PM   #5
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If you have a 20 amp circuit, you can safely run 1 air conditioner on that. You will need a 12 guage extension cord no longer than 50 feet. 25 foot would be better it will reach.
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Old 07-29-2014, 11:10 PM   #6
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I run mine from time to time when cleaning it getting ready for a trip. I would guess you are using a cheap, old or to long of a cord. I use a 25' construction grade 12 gauge cord and is never hot. I have a 3170 as well and believe the ac pulls 12amps. On a 20 amp outlet I would think you would be fine as long as you aren't making toast at the same time. I don't know if that's the correct answer but I do it quite often and works fine


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Old 07-29-2014, 11:39 PM   #7
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Don't forget the converter/charger, it will attempt to charge the house batteries and easily draws 5 - 10 Amps AC, ours draws up to 15 Amps.
A 15000 BTU air conditioner draws ~20 Amps on startup and goes back to ~16 Amps when running plus whatever the charger uses for the batteries.
To play it safe you need a 10 awg. ext. cord (not to long) and a 30 Amp hookup including proper wire size. A power management system with power sharing option would also help but can get pricey.
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Old 08-03-2014, 07:41 AM   #8
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Call an electrician and install the plugin and while you are at it, call a plumber for a sewer drop. Never regretted the money spent.


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Old 08-03-2014, 11:25 AM   #9
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You just need a heavy duty cord. Assuming you're on a 20 amp circuit you should be fine just running the a/c.
I've ran mine for days on a single 20 amp circuit.

Your cord is obviously too small since its getting hot, its probably a 12 gauge wire.
With everything plugged in and the a/c running go check your breaker box, just locate that one circuit and see how warm the breaker switch is. Warm is okay, hot is not.
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