Whoaaaaaaa, (Or Slow Down!). These figures are direct from the link Robin supplies.
- Input: 12V DC- Output voltage: 220V - 240V (can be chosen) 50Hz- Output wave: pure sine wave - Power rating: 3000W nominal, 9000W peak- Nominal efficiency: 88%- Power saving mode- UPS and bypass mode- Minimum battery voltage: 10V
Let's say you're using it at half nominal power for whatever purpose:
1500W = 125A at 12V but with a nominal efficiency of 88% that's upped the input current to 140A... no wonder the terminals look huge, you'd need some pretty thick cables for that!
If you were ever to go to 3000W or, Heaven forbid, the 9000W peak for even a short time, then you would destroy any 12V batteries that you might normally find on a boat. (Yes, I know about the ones BB are fitting to theirs).
And it works with battery voltage down to 10V..........