I would much rather hook up my handtruck for short term outage. The dual fuel westinghouse for the whole house is a beast to move around and sucks down propane. But it's peace of mind to have redundancy.
System:
Eg4 48v 3000w inverter
Operating voltage 120 to 500
In specs max current draw 18 amps?
Eg4 48v 100a battery
Six 400w panels
VOC 37
ISC 13.8
Would a 500v 20amp 2 pole circuit breaker be the right isolation between panels and inverter?