We have slept in our Vegas many nights running off either internal generator or race trailer generator (3500 watt champion). Vegas has detector and we have never had issue. We are heading out today for 3 day race. We will usually leave the trailer generator running through night if a/c needed. It runs up to 16 hours on 3.5 gallons of gas. If we leave Vegas Onan running, I will leave door open for additional cooling air. They both sound about same from Vegas interior.
As with all things, use good judgement if wind were to change and you have windows open.
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