I am wiring a 17,000sq. ft. house. The power company wants an 800amp service, and I agree. The only problem is that I have never put in an 800amp service on a house. The block layers are laying for the basement wall tomorrow and that is where the service location will be. They want to know how big and where to make sleeves for the service. My question: what is the best way to put this in? Any layout ideas? One 800a meterbase and two 400A service disconnects feeding 4 subpanels?