Multiple things

[Mrcoolabah1au]

How many can you run and why seems like if someone wants to watch tv and the fridge is going while someone has to cook tea while it getting hot in the kitchen you put a fan or two on something keep going beeping to tell That can not be done but you need to turn the microwave for a couple of minutes beep beep

[T1 Terry]

How many can you run and why seems like if someone wants to watch tv and the fridge is going while someone has to cook tea while it getting hot in the kitchen you put a fan or two on something keep going beeping to tell That can not be done but you need to turn the microwave for a couple of minutes beep beep

Depends what is beeping, either you need more battery capacity or you need more inverter capacity if you want to run everything at the same time. Even using the caravan park 15 amp supply it would trip with a combined load like that. So what is beeping?

T1 Terry

[Mrcoolabah1au]

The 3000 /6000 musi inverter soc was 89%

[T1 Terry]

The 3000 /6000 musi inverter soc was 89%

What was the voltage at the battery cable connections at the inverter itself? This is the critical part, too much voltage drop and no matter which inverter you use you will have the same problem.
That 3,000w is at the input side, not the 240vac output side, makes it easier to make out it is more powerful unit than it really is, 240vac would still be down around the 2,300w continuous mark. The 6,000w rating is simply a nonsense rating because it can't maintain that for as long as the blink of an eye, 3 milli secs I think is the max period it can do that.

T1 Terry

[dapope]

When I first setup the swagman, I had 5m cable run off 95mm sq . I would get 1.5v voltage drop under heavy load. I shortened the cable run to .5m Voltage drop reduced to .3v