OK posted and lost it try again. My experience doing residential services was 4 years in my early twenties I am now 68, and retired from the commercial fire alarm industry (which when I started was high voltage) , so I am not a total novice, just somewhat dated in the high voltage side. I work camp to augment my retirement, and get to travel the country. The owners here are very concerned about safety, they bought the campground complete with inadequate, improperly done wiring, and have spent thousands in total rewire of the campground by professionals. The bunkhouse was not a part of that project in that on the surface it "looked OK", and is remote from the campground proper. What started as a simple "fix it" after I discovered outlets with no grounds while installing GFI receptacles, has grown into an almost total re-wire as each item looked at uncovered more violations. The service drop idea got started when I discovered that the the main breaker in the bunkhouse was fed with 2/0, it starts in another building on a 50 Amp breaker fed with 8 Ga well wire. Thereby the decision that a new service drop was a must. The electric company field engineer said the transformer 400 ft away was adequate for the load, and recommended using 4/0 because of the distance. But he felt that the load center bus was stretched beyond its limit by the potential load and suggested a second load center for just the kitchen. As far as load calculations, with a range, a cooktop and electric water heater it don't seem too bad. But the potential for unexpected load in a 30 person bunkhouse is incalculable. There is already two toasters, 2 microwaves, 2 refrigerators, 2 coffee makers, 3 space heaters, an electric grill, and a roaster oven. People frequently will bring there own appliances, then there is the possibility of multiple hair dryers, curling irons, etc. The kitchen did have a gas range and there was a gas fireplace and water heater. The owner is afraid of gas (fire, explosion, CO) and removed/took these items out of service. My original question was how to properly connect two service panels to a new underground feed, not why it was needed (or not). Since this is a DIY forum, I understand your reluctance to help, but why critisize what you don't know the details of?