Lights range from 300 to 1000 watts and there can be hundreds of them. Amps are rated by watts and they are useing many of these at a time. A concert probably uses more power than a very large house does in a year.
45 watts
Hoovers use 1000 - 2000 watts
Abut 20 watts.
650 watts
About 10 watts
189 watts
25 watts.
it may use 15 to 25 watts
Usually about 1200 to 1500 watts.
250 Watts.
they use around about 55 watts for each headlight.