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Old 10-17-2013, 06:32 AM   #11
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Originally Posted by s1njin View Post
So ... how many amps does the converter pull when charging a battery if its been running the heater all night? I really don't want to bring both Hondas with me just so I can make a cup of coffee in the AM .... or maybe I need to run a extension cord off the Honda just to the coffee maker - which is really a ghetto way of doing it if you have a camper I think.
Answers that precise will require actual measurements. What is the state of charge when the charge is started? How many amps is the converter capable of?

Running an extension cord to the generator gains you nothing. The converter and the coffee pot still provide the same load to the generator.

You are over-studying this minor problem. Connect the camper to the generator. Run your coffee pot. If it does not overload then all is great. I don't think it will overload. If it does overload the disconnect the battery until the coffee is done.

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Old 10-17-2013, 06:54 AM   #12
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Sometimes the simple solution is the best - disconnect the battery.

As for the extension cord, I meant run it to the coffee pot independent of the generator being plugged into the camper. But pulling the battery fuse is so much easier. Thanks.

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Old 10-17-2013, 11:13 AM   #13
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Our charger takes a little over 3amps, however yours could be different. Since you only have 13amps available on the genny, I would suggest flipping off the breaker that feeds your converter for the 4-5 minutes it takes to brew your coffee. Once the brew cycle is completed, then turn back on the breaker to the converter.
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Old 10-17-2013, 11:48 AM   #14
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I think my coffee pot is 900 watts. Which would be about 7.5 amps right? 900/120 = 7.5. Maybe it'll work out as is. Flipping the breaker is just as easy - its not a fuse I have to pull right? Sorry, but I'm not home to go look.
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Old 10-17-2013, 03:48 PM   #15
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The following JOF link lists both 12V DC & 120V AC Amp draw ratings (estimates) on many different items that may be helpful:



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Old 10-17-2013, 06:22 PM   #16
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Found the breaker for the converter. Seems a easy thing to just turn it off until the coffee is done; no fuss no muss. I appreciate the idea guys - thanks much. And thanks for the link above !
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Old 10-17-2013, 10:06 PM   #17
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The limiting factor is your generator not the way it is connected. Adding an extension cord will not help. You need to figure out the actual draw of the converter and other loads while in use. This can be done before you leave. You can use a common multimeter or just plug the trailer into a "kill a watt" device available at hardware stores. You may need the p=ie formula where p= watts, i= amps, e= volts. This will give you an idea of the amount of power you have. (For the pursers out there I am assuming a power factor of 1 so technically p= Volt amps but this is close enough) Remember that everything you turn on will draw AC power even DC loads. The reason for this is because the converter is supplying the DC power up to its maximum output. E.g. 60 amps at 12vdc.
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Old 10-18-2013, 04:16 AM   #18
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I guess I still wasn't explaining myself correctly. I was going to use the extension cord from the generator to the coffee pot while the generator was disconnected from the camper's shore power line.

However, plugging the generator into the shore power line and flipping the converter breaker to run the coffee pot will work just fine for me for the little while the coffee pot is plugged in.

I do have another Honda that I can run in parallel, but I'm not going to lug them both out to make coffee. To run the AC yes, but not the coffee.
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Old 10-18-2013, 02:52 PM   #19
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As mentioned, just plug in your coffee pot and if the generator kicks off you will have to do something different. If the generator keeps running you are good.

We used to have a small tt and a small Honda 650 generator. If we wanted to run the vacuum cleaner we had to unplug the trailer and use a separate cord to the genny. The breaker on the generator would kick out.
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Old 10-19-2013, 08:25 AM   #20
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I must be missing something because I don't think your genny will be overloaded and I also don't think your battery charge will diminish at all (or at least not enough to make any difference) when running the coffee maker. Here's what I do; I get up, start the generator, start the coffee maker and go about my day. If my piece of junk, Champion 2000 inverter generator can do it, surely your Honda can
I would be a little more concerned about a group 24 battery making it through the night.


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