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Old 04-01-2019, 04:49 PM   #1
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2015 25' Flying Cloud
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Using microwave while traveling

We are unable to use our convection microwave oven in our 25 FC while traveling. Is the microwave only usable when connected to shore power? Batteries were fully charged. Even with the TV connected and running, the microwave would not turn on. Plug into shore power, it works great. Is this typical performance, and is there any way I can heat up food on the road?
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Old 04-01-2019, 04:52 PM   #2
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Originally Posted by Shazam View Post
We are unable to use our convection microwave oven in our 25 FC while traveling. Is the microwave only usable when connected to shore power? Batteries were fully charged. Even with the TV connected and running, the microwave would not turn on. Plug into shore power, it works great. Is this typical performance, and is there any way I can heat up food on the road?
Do you have the 1000w inverter option. If you do just turn it on when you are going to use the microwave. Just remember to turn it off when you are done.
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Old 04-02-2019, 02:11 PM   #3
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My paper work says we have a 1000W inverter. I turned on the inverter switch above the sink, but the microwave does not turn on. Is the microwave on the inverter circuit?
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Old 04-02-2019, 02:15 PM   #4
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Originally Posted by Shazam View Post
Is the microwave on the inverter circuit?
Ours wasn't with the OEM 1000W inverter. Now that we have upgraded our electrical system and batteries, all outlets are powered off the 3000W inverter when it's turned on.

All we had before was the TV and Bluray player, after moving the plugs to the other outlets (with the blue sticker).

Can you heat things up on the propane stove?
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Old 04-02-2019, 02:25 PM   #5
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Quote:
Originally Posted by Shazam
Is the microwave on the inverter circuit?
No it is not. The standard inverter does not power the microwave.

You have 3 options to run your microwave:

1. Plug into shore power (you already know this)

2. Run a small generator (Provide portable shore power)

3. Upgrade your batteries, inverter and perform some 120v re-wiring to safely run the microwave off the batteries

Option #1 is no cost (as you know, you can plug in while camping, etc..)
Option #2 is $750 - $2,000 depending on the generator you want to buy
Option #3 is $3,500 - $30,000 depending on how har you want to go with an off grid power system
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Old 04-02-2019, 05:19 PM   #6
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Thanks for the replies.

Propane was not the preferred option for heading up the sandwich.

We have upgraded AGM batteries along with solar. Looks like some rewiring is needed to get power to the microwave outlet.
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Old 04-02-2019, 05:55 PM   #7
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When I've had to heat up left-overs while traveling, I've opened the Microwave drawer, reached back and unplugged the MW then plugged it into a 6 foot extension that reaches to an inverter circuit. Then turn on inverter and heat your left overs. Not sure is this is standard practice, but works well.

Dave
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Old 04-02-2019, 06:07 PM   #8
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Heating up leftovers

Depending upon what your leftover is (if it is soup this will not work) wrap it up real well in foil, open hood of car, put leftover in convenient warm (not to hot) spot in engine compartment, drive a while, instant hot sandwich. Did this for years when serving in the Army when out on field duty. My favorites were cans of Beany Weenies and Vienna sausages. Pop the top barely open and place on manifold. Better than an oven. I learned this trick when we went camping as a family when I was a child. My Father learned it in the Navy in WWII. Still works today. Enjoy your hot lunch.
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Old 04-02-2019, 06:14 PM   #9
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Not sure is this is standard practice, but works well.

Dave
It could work for units that have the microwave in a drawer, but not on a unit like a 25' where it's installed below the stovetop.
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Old 04-02-2019, 06:16 PM   #10
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I think many microwaves draw more than 1000 watts, I think you need to check the capacity of the inverter and the draw of the microwave. I know my microwave sometimes will not run on the generator until I switch the converter off. Maybe pick up a lower wattage microwave.
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Old 04-02-2019, 06:36 PM   #11
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Maybe stop eating sammiches and go with soup?
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Old 04-02-2019, 07:12 PM   #12
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Quote:
Originally Posted by Shazam View Post
Thanks for the replies.

Propane was not the preferred option for heading up the sandwich.

We have upgraded AGM batteries along with solar. Looks like some rewiring is needed to get power to the microwave outlet.
You CANNOT run your microwave off the factory 1000watt inverter no matter how much retiring you do. The microwave uses 1800watts. You will either need to add a dedicated inverter for the Microwave or upgrade your factory inverter to a 3000 watt system. If you go the upgrade route you will have to add the microwave plug to the inverter circuit.
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Old 04-02-2019, 07:17 PM   #13
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You CANNOT run your microwave off the factory 1000watt inverter no matter how much rewiring you do. The microwave uses 1800watts. You will either need to add a dedicated inverter for the Microwave or upgrade your factory inverter to a 3000 watt system. If you go the upgrade route you will have to add the microwave plug to the inverter circuit.
Plus heavier duty cables and probably 400AH of AGM batteries or 200AH of Lithium batteries.

Wuulfrat had it nailed in his comment:

You have 3 options to run your microwave:

1. Plug into shore power (you already know this)

2. Run a small generator (Provide portable shore power)

3. Upgrade your batteries, inverter and perform some 120v re-wiring to safely run the microwave off the batteries

Option #1 is no cost (as you know, you can plug in while camping, etc..)
Option #2 is $750 - $2,000 depending on the generator you want to buy
Option #3 is $3,500 - $30,000 depending on how har you want to go with an off grid power system

I chose option #2. I run my generator to use my microwave when not on shore power.
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Old 04-02-2019, 07:31 PM   #14
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Quote:
Originally Posted by AirMiles View Post
Plus heavier duty cables and probably 400AH of AGM batteries or 200AH of Lithium batteries.

Wuulfrat had it nailed in his comment:

You have 3 options to run your microwave:

1. Plug into shore power (you already know this)

2. Run a small generator (Provide portable shore power)

3. Upgrade your batteries, inverter and perform some 120v re-wiring to safely run the microwave off the batteries

Option #1 is no cost (as you know, you can plug in while camping, etc..)
Option #2 is $750 - $2,000 depending on the generator you want to buy
Option #3 is $3,500 - $30,000 depending on how har you want to go with an off grid power system

I chose option #2. I run my generator to use my microwave when not on shore power.
My solution on my GT build out is to just not install a microwave. I rarely stay in campgrounds and don't even own a generator, to noisy.
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Old 04-03-2019, 12:33 AM   #15
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We have s funky little microwave that runs in 120 v AC or 12 volts DC. Tiny chamber, but great for heating a single sandwich or dinner item. No clue as to the brand...
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Old 04-03-2019, 06:26 AM   #16
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Agree with others...the microwave is not meant to run off the batteries. If you do buy a MUCH bigger inverter, you would need a major battery upgrade also!
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Old 04-03-2019, 06:27 AM   #17
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Another, no frills, no-modifications-needed traveling option for reheating is one of the small crockpots, which you can plug into your 12volt.
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Old 04-03-2019, 07:52 AM   #18
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My 1000W microwave uses 150 amps from the battery. I have a 2000w true sine wave Samlex inverter. 690 amp hour battery bank. 400 watts of solar on the roof with a Morningstar pwm controller. I use the microwave about 15 to 20 minutes per day on the high end, less if bad weather. Every thing is fine in my world.
I know people that use smaller microwaves on 1000 watt, true sine wave, inverters. But you do need the battery power to avoid voltage drop.
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Old 04-04-2019, 07:27 AM   #19
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All,

This is the closest thread I could find to my related question. Assuming a 200ah lithium bank and 3000w inverter (Victron Multiplus), I calculate that a 2000w draw at 120V requires 16.6ah/hour to run.

Unless I am missing an important piece of info, I should not only be able to run the microwave, but could also run my a/c with an easy start (not simultaneously).

Is there another factor I am unaware of or is that correct? It is not my intent to do so often, but I do want the option in a pinch. Thanks
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Old 04-04-2019, 07:37 AM   #20
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All,

This is the closest thread I could find to my related question. Assuming a 200ah lithium bank and 3000w inverter (Victron Multiplus), I calculate that a 2000w draw at 120V requires 16.6ah/hour to run.

Unless I am missing an important piece of info, I should not only be able to run the microwave, but could also run my a/c with an easy start (not simultaneously).

Is there another factor I am unaware of or is that correct? It is not my intent to do so often, but I do want the option in a pinch. Thanks
If you a drawing 16 amps at 120 volts AC (1920 watts) you will be drawing 176.64 amps at 12 volt. (https://www.batterystuff.com/kb/tool...-inverter.html)

You might be able to start your air conditioner, but you couldn't run it very long.
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