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Old 12-09-2011, 06:57 PM   #1
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I have purchased a new Redwood 34SK and am expecting to receive it in mid to late January. I purchased the generator option with the unit, along with the washer/dryer, 2nd A/C with heat pump, and fireplace. Has anyone had any experience with the 5.5kw generator option and any limitations about what equipment can run without overloading the generator?
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Old 12-11-2011, 10:41 AM   #2
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I am not an expert on the generator option. I have seen on other forums that folks use generators in the range of 4000 to 7000 watts. I can tell you that you won't be able to run many loads simultaneously especially the larger loads like an air condition or the fireplace heater. Some simple calculations will give you a rough idea, for example a 13,500 BTU/Hr A/C converts to line watts of approximately 4395 watts at 90% efficiency and a 15000 BTU/Hr A/C converts to line watts of approximately 4900 watts at 90% efficiency.A 5.5 KW generator should allow you to run either one of those loads plus a few lights.
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Old 12-11-2011, 02:18 PM   #3
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Thanks for the input.I will do some testing when I get my RV to determine the limits, especially on equipemnt startups demands from motors.
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Old 12-11-2011, 02:30 PM   #4
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I am surprised at the high watts, since the FLA on most 15000 BTU AC's is approx 3300 Watts and they run on a 20 amp circuit. I would suggest you ask the salesman to get you the FLA from the boiler plate on the AC. A 5.5K Genset will be more than enough. I know several owners that are using 3 to 3.5K Gensets without any issue.

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Old 12-11-2011, 02:49 PM   #5
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I will test the loading with an Amp meter when I get my 34SK in January while running on supplied electrical outlet. I should be able to determine individual AC equipment loading demands and wattage requirement.
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Old 12-11-2011, 07:14 PM   #6
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A 5500 watt generator will easily run two air conditioners with power to spare. Most modern RV a/c's run a peak startup of less than 20 amps and steadily operate at less than 15 amps. Even 20 amps at 120 volts is only 2400 watts.

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Old 12-18-2011, 05:50 AM   #7
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We have a 5.5 and have no problem with 2 a/c's running in Fl. hot sumer
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Old 02-22-2012, 09:26 AM   #8
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I NEED INFORMATION! My dealer is telling me I may have to switch from a gas 5.5 generator to a LP. How long does a 40# LP tank last while running a generator?

They originally said they could install a 20 gallon gas tank but now they aren't so sure.
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Old 02-22-2012, 10:11 AM   #9
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Look on the Onan website you should be able to find the info there. I will guess at mid level output 1 tank might last 24 hrs or so running non stop.
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Old 02-22-2012, 11:11 AM   #10
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I have a buddy how has a propane 6500 watt gen. When it is running 1 ac it burns .65 gallons per hr. A 40 lb tank is 9.25 gallons.

I have a 5500 watt gas gen. It will burn .6 gallons per hr.

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