Only used for a couple hours, mostly testing it's capabilities... Has a very large fuel tank on top so it can run for a very long time without adding fuel and you can also add fuel while its running for countinius operation... On large wheels and has a large handle for easy handling and moving to location needed etc. and run a whole house and has 50AMP Plug and multiple 30AMP plugs. Have a 30’ cord that you can plug main home transfer switch etc… Ran A/C and everything in the home turned on in the summertime for testing and it did not even flinch… electric cable alone was over $400 they it created, which will go with the unit…