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Old 09-01-2020, 05:02 PM   #1
Sharko
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Newbie question

I have a 2020 3930 montana with a LP generator. - I emptied one entire stock 30lb tank in 1 1/2 days with only running the generator for 2-3 hours and normal breakfast grilling. Is this normal? Thought it was rated with a load to run for 1 hour per gallon. A 30lb tank is 7 gallons?
Also
Does anyone know what these 3 panel rocker switches control? The 2 panel switches control perimeter lights and the led strip on front but I see nothing happening with any of these switched on.
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Old 09-01-2020, 06:56 PM   #2
Ahdmeyer
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pulled this off the net
7 gallons
Most commonly, they mount two 30 lb tanks on the tongue of the trailer which supply gas for the refridgerator, heat, and stove-top. However, 30 lb tanks can be used with space heaters, construction heaters and other propane applications. A 30 lb tank holds 7 gallons of propane and weighs 55 lbs full.
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Old 09-01-2020, 07:25 PM   #3
DQDick
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Those three switches are probably for you tank heaters.
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Old 09-01-2020, 07:28 PM   #4
mhs4771
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Seven Gals in the max capacity of 30 Lb propane tanks, but are generally filled to only 80% of capacity, so probably 5 or 6 hours under load would be about right.
We have dual 40 Lb tanks that again are rated at 10 Gals, but running both ACs can burn through a tank in approx 8 to 9 hours.
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Old 09-01-2020, 07:30 PM   #5
Sharko
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Originally Posted by DQDick View Post
Those three switches are probably for you tank heaters.
Oh crap, that makes total sense. But I would guess tank heaters would consume allot of power. So surprised Keystone or the dealer couldn't tell me. Guess I will do a voltage draw test to see if anything changes when on.
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Old 10-04-2020, 07:11 PM   #6
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Originally Posted by Sharko View Post
Oh crap, that makes total sense. But I would guess tank heaters would consume allot of power. So surprised Keystone or the dealer couldn't tell me. Guess I will do a voltage draw test to see if anything changes when on.
How did you do the voltage draw test?
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Old 10-04-2020, 07:43 PM   #7
Sharko
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I didn't do a test. Not sure if they only work on shore power. I guess you would check voltage across battery with voltmeter have someone turn them on while knowing nothing else is running. Or disconnect and put meter in series with current settings on meter and turn on to see the current pull with switches on then off
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Old 10-04-2020, 07:46 PM   #8
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Thank you, I think I know how to do it, I just wanted to know if you had an easier way.
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Old 10-05-2020, 10:55 AM   #9
Arkware
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The tank heaters are 12 V.
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