You can leave your inverter on state as long as it does not over use the rated capacity of the inverter.
Yes. you can use 2 inverters together as long as they perfectly matched with the correct electronic reequipments.
To run a TV, you need to have at least 250 to 300 watt range inverter. Also, the inverter should be a pure sine wave type one.
small refrigerators, tablets, cellphones, cameras, laptops, repair tools, game consoles, small TV, DVD players, and many household appliances
