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Thread: Generator Power

  1. #1
    Setting Up Camp
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    Generator Power

    I just picked up a new to me 2018 Momentum 397TH.
    It appears that when I am running off the generator that my tv, fireplace and microwave and few electrical outlets don't work. Hook it up to shore power and they all work.
    I read in the manual about this and sure enough this is the case. Is there a way around this or it is what it is?
    I did some testing last night and I don't think the Norcold frig will run off the generator either.
    We don't plan to do much boondocking at the moment, but you never know and I'd like to be prepared if we do.

    TIA,

    Chad
    2018 Momentum 397TH
    2021 Ford F350 DRW

  2. #2
    Long Hauler
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    Is this the built-in generator? That just seems very odd. I've had a couple trailers with generators and everything worked with the generator running.
    Howard and Peggy
    2019 Momentum 351M, and 2018 RAM Cummins dually 6-speed.
    His: 1999 Honda Interceptor
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  3. #3
    Setting Up Camp
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    Quote Originally Posted by Hoopy Frood View Post
    Is this the built-in generator? That just seems very odd. I've had a couple trailers with generators and everything worked with the generator running.
    Yes, it's the Onan 5500 that came equipped from the factory
    2018 Momentum 397TH
    2021 Ford F350 DRW

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    Site Team Ynot4me2's Avatar
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    I'm not familiar with your model but there might be an inverter somewhere that needs to be powered on. If not, then you could always add one.
    Steph & Lise
    2019 F150 Lariat 2.7 EB
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    Site Sponsor JCR GD's Avatar
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    Quote Originally Posted by Chad74 View Post
    I just picked up a new to me 2018 Momentum 397TH.
    It appears that when I am running off the generator that my tv, fireplace and microwave and few electrical outlets don't work. Hook it up to shore power and they all work.
    I read in the manual about this and sure enough this is the case. Is there a way around this or it is what it is?
    I did some testing last night and I don't think the Norcold frig will run off the generator either.
    We don't plan to do much boondocking at the moment, but you never know and I'd like to be prepared if we do.

    TIA,

    Chad
    What does work on gen.? All the things you mention should work with gen.

    Check the breakers on the generator itself.
    Jim (& Sharon)
    2015 GD Momentum 385TH - SOLD
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    Site Sponsor
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    Sounds like a transfer switch issue or a breaker is tripped on the generator.
    John & Kathy
    2014 F250 Lariat FX4 6.2L SBCC
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  7. #7
    Setting Up Camp
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    Quote Originally Posted by JCR GD View Post
    What does work on gen.? All the things you mention should work with gen.

    Check the breakers on the generator itself.
    Breakers on gen aren't/weren't tripped. I reset them and still no power to the appliances mentioned. The furnace and some lights worked. I didn't check the ac because it was 30 degrees outside.
    Also checked the breakers in the breaker box and they all were good as well.
    2018 Momentum 397TH
    2021 Ford F350 DRW

  8. #8
    Setting Up Camp
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    Quote Originally Posted by jkwilson View Post
    Sounds like a transfer switch issue or a breaker is tripped on the generator.
    Where would I find the transfer switch?
    2018 Momentum 397TH
    2021 Ford F350 DRW

  9. #9
    Site Sponsor JCR GD's Avatar
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    Quote Originally Posted by Chad74 View Post
    Breakers on gen aren't/weren't tripped. I reset them and still no power to the appliances mentioned. The furnace and some lights worked. I didn't check the ac because it was 30 degrees outside.
    Also checked the breakers in the breaker box and they all were good as well.
    Furnace and lights work on battery.

    It does sound like no AC power at all. Agree transfer switch is the next thing to check. It's in the basement behind the angled wall.

    Edit: you should hear a loud thunk when transfer switch switches after 30 sec or so of the generator running.
    Last edited by JCR GD; 12-27-2022 at 08:54 AM.
    Jim (& Sharon)
    2015 GD Momentum 385TH - SOLD
    For Sale - 2015 Ford F-350 DRW 4x4 Lariat w/ AirLift bags, Titan 65 gal. OEM replacement fuel tank.
    The toy:
    2017 RZR XP 1000 EPS SE

  10. #10
    Setting Up Camp
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    Quote Originally Posted by JCR GD View Post
    Furnace and lights work on battery.

    It does sound like no AC power at all. Agree transfer switch is the next thing to check. It's in the basement behind the angled wall.

    Edit: you should hear a loud thunk when transfer switch switches after 30 sec or so of the generator running.
    I haven't heard no thunk, I will check transfer switch tonight when I get home. Thanks
    2018 Momentum 397TH
    2021 Ford F350 DRW

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