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Old 11-17-2023, 09:39 AM   #1
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Why wire it this way?

So, you have a new 2024 Airstream, and you want to dry camp at a Harvest Host Winery parking lot. No problem, you have the new 2,000 watt inverter, a couple of 100ah LiFePO4 batteries, and a few solar panels on the roof. You’re good to go, right?

Come morning you want to bake some biscuits in your lovely Convection Microwave Oven, so you switch on the factory installed 2,000 watt inverter. Nothing. No AC power to the Convection Microwave Oven. You check the AC circuit breakers. The 15 amp microwave circuit breaker is on. Hmmm.

With the advent of model year 2024 most Airstream trailers now come with a 2000 watt inverter which powers a select few 120VAC outlets. Oddly, these inverted outlets are located next to 12VDC TVs and Entertainment Centers.

Why not use this new 2000 watt inverter to power the Convection Microwave Oven outlet and possibly another single outlet for things like a hair dryer? Both of these examples represent items that only briefly require 120VAC.

Sure, with the wiring scheme I am proposing, you could overload the 2000 watt inverter if you powered up a hair dryer and the Convection Microwave Oven at the same time, but there is nothing to prevent you from doing the same sort of thing with the existing wiring scheme either.

If anyone has the specifics of the 2024 Airstream factory 2000 watt inverter — manufacturer model number and physical location, etc., I would be curious to know them.

Note: I re-wired my previous 30 amp rig so the entire 120VAC panel was powered by a 3000 watt Victron MultiPlus Inverter / Charger. In 11 months of ownership I found the most practical use of this arrangement was to occasionally run the Convection Microwave Oven or a hair dryer. I am not totally convinced I need to go that route again with my new 50 amp rig.
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Old 11-17-2023, 10:07 AM   #2
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I think AS probably does it to protect the owner from their own ignorance. Many, maybe most here, know how to manage their bath and kitchen circuits, but some do not.
The way they have it configured at least makes everyone think about what they are inconveniently plugging in. ��
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Old 11-17-2023, 10:17 AM   #3
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My guess is that you will have drained the LifePos before your biscuits are baked. That oven takes a lot of juice.
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Old 11-17-2023, 10:43 AM   #4
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Just a data point. The new Tradewind has a 3000W inverter which powers all the outlets. So maybe this is the threshold for Airstream.
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Old 11-17-2023, 11:39 AM   #5
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Quote:
Originally Posted by thewarden View Post
My guess is that you will have drained the LifePos before your biscuits are baked. That oven takes a lot of juice.
The actual specifics of the RV-200S-CON Contoure Convection Microwave Oven:
Max Amp Draw: 12.5 Amps
Wattage:
Cooking: 1000 watts
Convection: 1500 watts

Pillsbury Biscuits:
HEAT oven to 325F for nonstick cookie sheet in convection oven
BAKE 9 to 12 minutes or until golden brown.

So, 2 x 100ah batteries, 200ah x 12v = 2400 watt hours of power.

Oven pre-heating and cooking time = 15 minute or .25 hours

Battery usage equals .25 hours at max of 1500 watt or 375 watts hours
(Unlikely to have a 100% duty cycle but this allowance will offset inversion loss)

375 watt hours / 2400 watt hour capacity = 15.625% of total battery capacity.
300 watts of solar is likely to replace that loss in a few hours on a average day.

I can’t think of a better way to waste electrons. Unless, it’s my wife drying her hair.
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Old 12-09-2023, 10:49 AM   #6
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Quote:
Originally Posted by SallyForth View Post
Note: I re-wired my previous 30 amp rig so the entire 120VAC panel was powered by a 3000 watt Victron MultiPlus Inverter / Charger. In 11 months of ownership I found the most practical use of this arrangement was to occasionally run the Convection Microwave Oven or a hair dryer. I am not totally convinced I need to go that route again with my new 50 amp rig.
Actually, that would exactly be my suggestion: the 1000w and 2000w inverters that come in Airstreams are set up to only run a few outlets. The new Trade Wind is the only one so far w/ a Victron 3000w from the factory. If you want to run the oven, you want to be able to do it amply, not just barely, and I dont think the outlet inverters are up to snuff for an oven load.
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