4000 - 6000 watts will draw attention, otherwise I wouldnt worry... my computer has a 1000 watt power supply, allthough I dont max it out all the time, I do have 4 computers running in my home office, as well as other kinds of equipment which uses alot of electricity. My friends have told me my office alone uses more watts than my grow. My guitar amp alone is another 100 watts.
Most big screens are somewhere near 400 watts or more.
you gotta think about all the people with welders in their garage and other shop equipment that use up tons of watts. if youre running 2000 watts youre fine.