There is a "tent loop" that does not allow generators. The Hopi loop, which is dry camping, does allow generators. The people in the site next to us ran theirs from 6am to 10 pm. Those are allowable hours, but please don't be as obnoxious as them. Next time, we'll stay in the tent loop, which allows RVs, but no generators.

We were in the loop with full hook up so I’m not positive I would call them and ask. Some national parks allow them but can only run them certain hours.

Yes from 8 am to 8 pm