to have it wired to the outlets also means there needs to be a transfer switch to switch between shore power/generator and the inverter. you do NOT want to ever have inverter and generator/shore power connected to the outlets at the same time.!!!
You also need to have it wired so the converter (charger) is NOT connected when the inverter is running. Otherwise the converter tries to charge the battery from the inverter connected to the batteries. Not good!
When I installed mine, I added a subpanel and transfer switch. On the inverter, a 1000W sine wave, the inverter via the subpanel is only connected to outlets and microwave. will not power the fridge, converter, AC or water heater.