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. > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist