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  1. #1
    Worlds Shortest Tall Guy kwando's Avatar
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    Default Generator cord

    Recently moved to a house that is wired for generator backup. On the outside is this setup





    On the bottom is this plug, I believe it is a L14-30 style plug.





    My generator is a Duramax EP4850-EX, and the plug matches





    Is it as simple as getting a extension that matches? Do i need a special gauge per length?
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  2. #2
    Grand Master Know It All
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    You need to verify guage based on amps and length. Google has plenty of charts.

    Amps also need to be verified for the panel draw and the plug rating.

  3. #3
    Gong Shooter PSS's Avatar
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    I looked up your generator and is rated for 3,850 constant watts. It's not going to handle much. You need something like a 7.5 kw generator IMO.
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    The "Godfather" of COAR Great-Kazoo's Avatar
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    Quote Originally Posted by PSS View Post
    I looked up your generator and is rated for 3,850 constant watts. It's not going to handle much. You need something like a 7.5 kw generator IMO.
    His generator will keep the fridge going, maybe alight or 2. Forget about HVAC. We have a 7500W unit. if the house requires heat (GFA) it's a noticeable draw on start up. Which is what people overlook when buying. Sure it will handle run times, but not always one that can handle start up surge. . I run a 10/4 15' cord for the house - genny.
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  5. #5
    If I had a son he would look like....Ben SideShow Bob's Avatar
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    Quote Originally Posted by Great-Kazoo View Post
    His generator will keep the fridge going, maybe alight or 2. Forget about HVAC. We have a 7500W unit. if the house requires heat (GFA) it's a noticeable draw on start up. Which is what people overlook when buying. Sure it will handle run times, but not always one that can handle start up surge. . I run a 10/4 15' cord for the house - genny.

    Turn off all circuits on the generator, start generator, then slowly turn each circuit on. Unless you have an auto-start generator back up. In that case get a bigger generator.
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    My Fancy Title gnihcraes's Avatar
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    Quote Originally Posted by SideShow Bob View Post
    Turn off all circuits on the generator, start generator, then slowly turn each circuit on. Unless you have an auto-start generator back up. In that case get a bigger generator.
    turn on the ones you need. Run the furnace at night, fridge during day etc. Alternate. I can run one or two of these devices together usually with my 1850 watt.

    Be sure one breaker has some lights, another furnace, another fridge/kitchen. I don't need to run it all at once.
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  7. #7
    Gong Shooter PSS's Avatar
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    Short answer is you need #10 gauge 4 wire SO cord. Limit the length of cord. I'd keep it within 20 ft personally.
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  8. #8
    Worlds Shortest Tall Guy kwando's Avatar
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    Thx, there is a spot next to the panel for the generator so I should be able to get away with a short cable.

    Yea I am aware it's low, its mainly for well pump.
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  9. #9
    Paper Hunter
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    1. It would behoove you to figure out what each circuit feeds before you need to hook up the generator. You might turn a particular circuit off-on-off, as needed and when needed.
    2. While Home Depot or Lowes might have all the parts, I would buy all the parts from an electrical supply house. If you were in Colo. Spgs., I would recommend American Electric.

    Good luck.

  10. #10
    Gong Shooter yz9890's Avatar
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    I had the same manual transfer switch on my last house. Loved it. I didn't need any 220 during an outage so having 10 transferring circuits was pretty nice. Used it for a almost a week after what was left of Ike turned into an ice storm in Kentucky.

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