I plugged in the vacuum and the power stopped working.

I plugged in the vacuum and the power stopped. I checked all the outlets and fuses are good. I tightened wires on 4 outlets, 2 switches, panel box, and 2 junction boxes in attic for 4 ceiling fans. The tester shows I have power coming to outlets, but not enough to run anything. I haven't added anything new onto circuit. Never had any problems before on this circuit. 100 amp service with fuses. Tester reads Hot-ground reversed.

Thanks,
Pat from NY

By tadpole