Male inlet to female outlet

Good evening,

I have a small solar shed setup with battery storage and a modest 1100W 12VDC to 120VAC inverter. What I would like to do is be able to run an extension cord to a male inlet on an exterior wall which would feed into a single female outlet on the interior wall. This would be completely separate from my house's electrical panel and provide power to run a few necessities in the event of a power outage without having to have an open window or door during the chilly Oregon winter months.

My biggest concern is, obviously, is this safe? The inverter is fused, but would I want another fuse/breaker closer to the inlet-to-outlet setup? What about an earth ground?

Pointing out anything I may have missed or overlooked would be greatly appreciated. Thank you.

 

So long as it is a totally separately derived system it should be okay. I'd suggest a blue or red colored receptacle and a label just so others will know what the receptacle is.