Well A 200 watt light bulb does not have a fan blowing on it continuously with large aluminum heat sinks surrounding it. So IMO you cant compare them.
From my experience with a 1200 watt inverter - it only gets warm after a few hours light use.
Perhaps if I was running my inverter at peak wattage for 30 minutes or more it might get much hotter but I think most people will use the inverters for the frig and one TV and maybe a few lights continuously and other electrical items intermittently (so they are only at or near peak for a short term).
Just leave plenty of room around the inverter and would suggest a vent (or two) if under dinette or someplace that is enclosed for air flow.
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