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Thread: What size generator do I need?
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03-29-2021, 06:38 AM #1
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What size generator do I need?
We’re going to the keys at the end of May and we’re going to make it a 2 day trip down. We are going to need a generator that will run the a/c and microwave. Just not sure what size to get? If we need to we can cut off the a/c to run the microwave. We are pulling a 2020 Imagine 2600rb 30 amp. Thank you!
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03-29-2021, 07:07 AM #2
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Mark & Mary. Full-timing across the USA (and Canada)!
Current Coach: 2021 Grand Design Reflection 320MKS
Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel
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03-29-2021, 07:08 AM #3
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Ok how do I know if I have a soft start a/c?
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03-29-2021, 07:17 AM #4
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03-29-2021, 07:20 AM #5
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You would have to get in the roof and take the cover off the AC unit. If there is an acrylic box instead of a capacitor, you have the soft start. Google Soft Start AC unit. They sell for about $300.00. What the unit does is ramp up the power slowly instead of hitting it hard when the compressor kicks on. If you have great hearing, you can probably tell by listening, you won't hear the "thump" of the compressor kicking on if you have a soft start conversion.
There is also something called a hard start capacitor, it is a much larger size (in farads) capacitor than what normally comes with the AC units, and works along the same lines. They run about $200.00, I think.
Either option is good. Both prevent a large power hit when the compressor kicks on.
I know with my 2021 320MKS, it came with the hard start capacitor from Grand Design.
Sent from my phone using TapatalkLast edited by MoonShadow_1911; 03-29-2021 at 07:23 AM.
Mark & Mary. Full-timing across the USA (and Canada)!
Current Coach: 2021 Grand Design Reflection 320MKS
Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel
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03-29-2021, 07:28 AM #6
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Ok I know I can run my a/c off my house without a 30 amp plug. So I might already have one on mine. I’ll try to pull the cover off today. Thanks again!
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03-29-2021, 07:33 AM #7
I am pretty sure that you are way off on the price of the Hard start capacitor.
I think it is in the $20-$40 range. It is often called a soft start kit. It stores electricity so it is available for the surge the compressor needs when starting. What you call a soft start kit is actually called an Easy start. It has some additional electronics in it, and is in the 300.00 range2021 398M Full Body Paint 8k axles. LRH tires. Disc brakes.
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03-29-2021, 07:41 AM #8
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No, that's different. Your house 30 amp will provide continuous power. The inverter/generator motor will stall if the AC compressor kicks on because the wattage will be over what the generator can provide. Most 15K AC units have a peak wattage of the around 3500 watts to start the compressor, and about 1800 watts to run. With the soft start unit, or a hard start capacitor, the wattage is greatly reduced to around 2000-2200 watts to start the compressor. Most inverter/generators have a running wattage and a peak wattage, for instance, a 2000 watt inverter/ generator has a peak of 2200 watts. This means for "momentary" power loaf increase to 2200 watts, the inverter/generator will continue to run, without stalling out.
You will also notice I keep referring to an inverter/generator and not just a generator. This is because an inverter/generator provides a full sine wave rather than a modified sine wave. Most new RVs contain more sensitive electronics than older ones. You said you have a 2020 coach, so it probably has LED lights and the like. Those electronics are more sensitive to modified sine wave properties.
Sent from my phone using TapatalkMark & Mary. Full-timing across the USA (and Canada)!
Current Coach: 2021 Grand Design Reflection 320MKS
Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel
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03-29-2021, 07:43 AM #9
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Mark & Mary. Full-timing across the USA (and Canada)!
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Current Rig: 2019 Ford F350 SD Crew Cab, w/8' box, Lariat, SRW, 6.7l Diesel
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03-29-2021, 08:14 AM #10
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Ok thanks for all the info. So if I get a generator make sure it says inverter/generator? No I do not have a 30AMP plug at my house I adapt it down to a 15 amp(I think) regular wall plug on the outside of my house. What inverter gen do you recommend? Brand that is? Honda, champion, Wen, etc.......
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