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Thread: help using all 3 phases of 804b

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    Default help using all 3 phases of 804b

    My friend wants to use all three legs to get his 15k out of his 804b. Setup is he is in mobile home power feed from a pole with his main 200amp and trailer feed through the lug bars [see pic]. His AC two double 60amp breakers, well 20amp double, barn 20 amp single.

    So what I've found is 100amp main breaker 3 phase outdoor square D box with bolt in breakers. Bring all three legs of 804 in then feed the AC's off l1, l2, then back feed trailer off l2 l3. then feed barn and pump off lightest loaded legs. I back feed the trailer by replacing trailer lugs with double tap lugs

    Seems I can buy used 3 phase bolt in breakers fairly cheap. Makes it easy select legs.

    Now here is the trick, when on street power the back feed won't feed l1, so put in 60amp 3phase breaker and short l3 to l1 buy turning on the breaker with jumper across l3 l1

    What do you think
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    Last edited by LEOK; 01-28-2019 at 23:57.

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    When confronted with this sort of a question I call a qualified Electrician. He will know what is up to NEC standards and can keep everyone safe and secure during an outage. But that is me: I know I have a lot to learn about power generation.

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    I'll second the "call an electrician" motion.

    Electricity acts in a split second and when things are wired wrong, it can cause major catastrophic damage.

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    I'm really surprised, you guys jump right in fixing your units which is much more complicated than this project. I was hoping somebody else had thought of some thing I hadn't.

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    You can find info if you search the SS site. This popped up when I punched in a search: https://www.steelsoldiers.com/showth...enerator/page2

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    I third the motion of "Call an electrician". Mobile homes & houses use single phase power, you are trying to get all the power out of a three phase generator by combining the phases, it won't end pretty. You can use three phase in your shop if your equipment is three phase & your wiring is three phase. You can wire the generator to utilize each phase separately & balance the load on each leg, but you must know what you are doing & your panel is not wired for that. Again, call an electrician; I don't want to read in the paper where a local guy had an accident with a military generator.
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    Quote Originally Posted by LEOK View Post
    I'm really surprised, you guys jump right in fixing your units which is much more complicated than this project. I was hoping somebody else had thought of some thing I hadn't.
    Not to be too controvercial but fixing/repairing a "source" of power to accomplish its published and designed output capability within its specified parameters is completely different from applying that same source of power to a circuit.
    Last edited by Farmitall; 01-29-2019 at 22:19.

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    Don't do it that way. Phase imbalance will cause frequency issues, making the governor hunt excessively. Plus running 240 service at 208 with less current compounds the problem. This is a standard 12 lead stator brushless design. It can be reconnected in either low zig zag or double delta, netting 120/240 volt split. Plenty current for all your needs.
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    you do know that the voltage between two legs of a 3 phase power source is 208 volts compared to the voltage between two legs of the single phase is 240 volts???

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    Quote Originally Posted by Keith_J View Post
    This is a standard 12 lead stator brushless design. It can be reconnected in either low zig zag or double delta, netting 120/240 volt split.
    Pretty sure the 804 has a 10-lead generator head, which is 3 phase only.
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