DOITHARD wrote:
The rationale behind the high inverter wattage is just in the event I want to run the microwave or coffeemaker. I have (2) group 31 AGM 200ah each w/ 430 watts solar panels and 40 amp MPTT controller.
Coffeemaker sure, but those two G31s will struggle if you attempt to power a microwave oven ... for that you'd want double that capacity. Solar doesn't have anything to do with this aspect as it's sole purpose is to re-charge depleted batteries, not power anything directly.
FWIW, I've done the "whole house" powering scheme with my own inverter and concluded it was such a PITA that I'd rather have a few duplex receptacles conveniently located in the camper that are wired directly from the inverter - no transfer switch, no going outside to plug the trailer's main service cable into the inverter, no remembering to turn the converter off, no remembering to force the fridge to gas, no remembering to make sure the water heater's electric element is turned off.
As for the size of inverter my bet you have an MSW inverter that
with a sufficiently sized battery bank would power many of the devices you intend but for many others is WAY overkill, the disadvantage being it's MSW waveform. I instead chose a 1000 watt PSW inverter which is capable of safely powering any devices we want - coffee maker, toaster, wife's hair dryer on low, fans, etc. Last season I used our existing G27 as source supply and while
when fully charged it did power the aforementioned devices without triggering it's low voltage alarm this season I plan to more than double my battery capacity by replacing it with a pair of G31s ... but no way would I expect to power a microwave without a much higher rated inverter AND at least a bank of four 12 volt G31s or four 6 volt GC-2s.
