This unit has been on line for 3 years, changing out the generator, next 
larger is considerably more money, and engine. There is no standard 
boxed version that will run gasoline, natural gas, or propane and switch 
under load between fuels. The current action is a little fine tuning of 
the system. The reason they specify a locked rotor amperage, is so in 
the event that does occur, the circuit breaker (which normally protects 
the wire, and is sized for the wire size)  is expected to open the 
circuit in case of equipment failure, therefore oversizing the wire and 
breaker is not an appropriate practice.

There is a 2 stage resistance heat unit on the system that draws the 83 
amps for both stages. The generator's PLC shuts down the one stage if 
the generator is online, and shuts down the entire resistance during 
generator starting or switching fuels until the generator has stabilized 
on the new fuel. The generator handles that load and at the same time 
any other house loads easily.

Mongol Herdsman wrote:
> Carl Denk wrote:
>   
>> As for the inverter mentioned in another message, it's only 16kw surge,
>> and with the generator at 12.5kw and 300% temporary overload, I don't
>> think it will be adequate, plus I don't know cost but probably $100's or
>> even $1000 which is out of budget.
>>     
>
> It was you who wrote in the first post:
>   
>> Breaker: 30 amp
>> RLA: 15.4 AMP (running amperage)
>> LRA: 83 AMP (locked rotor amperage)
>>     
>
> 83 Amp * 220 V = 18.26kW, well, slightly more than 16kW, get 20kW model.
> If it is out of budget, you may spend the time to earn some cash to
> increase the budget. Depending on your hourly rate it would take from
> a couple of days to a couple of weeks. It is less time  than the time
> to develop a unique device in a proper way. If you are smart enough to
> develop the device in less than two weeks, you, probably, could earn
> enough cash in less time to purchase the standard boxed solution.
>
> Regards.
>   
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