typing this from my phone so it'll have to stay short. 1W = 1A x 1V so watts equal amps times volts. This means if you're running on 120v then
1000W = ?A x 120v so after solving Amps drawn are 8.33 remeber a 15amp breaker should only be run at 80% capacity. So only 1 1000W light per 15amp...