Re: 1 Big and 1 Small Inverter
When you split inverter loads up like that it's generally using something like a Morningstar 300 for the little things (very small draw in search mode for those items that are on only as needed) and a bigger (1kW or more) inverter for the large loads - providing they can be used selectively.
That's the trick; how well can you control load use? Things that need power on demand like refrigerators can make a mess of the plan. If the big inverter is going to have to be on/available anyway - what's the point in having a small one?
Somewhere on here I went through the rigamarole with my wife's suggestion of a separate small inverter for the office. The cost of buying the extra equipment for the dual system could also expand the large system so that the energy draw was not an issue. Likewise I have tried my inverter in search mode and found what it saved in energy per day wasn't that much due to the repeat demands of switching on the 'frige.
That is a big one: refrigeration. For the most part if you run an electric 'frige the small inverter will be of no use and the large one will have to be available all the time anyway.
It's a bit different from starting a 5kW gen to run the washing machine while using a 1 kW inverter to run everything else. You really have to figure out your loads and how you will use them.
Four 175 Watt panels, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.
Ohm's Law: Amps = Volts / Ohms
Power Formula: Watts = Volts * Amps