i am doing work in a 6000sq' house w/ a 200amp service. elec dryer, oven hot tub outside, 76 amps of a/c, 7 refers, etc and we are finishing the basement to add another 2000 ft. service is underground 300 ft away and x-former in on other side of driveway and cobblestone walkway that was just done. BTY house is just 3 months old. can't wait to give them a price for service upgrade.