Originally Posted by NolaTigaBait
Are you using one of those feed-thru panels?..If so, use 200 amp wire(and a 200 amp mlo panel) and you are good to go. If you want a "feeder tap" you need to look at 240.21 b...
If he's running to the house from a separate (unattached) building, he would need a disconnect unless he has 6 or less breakers. You can get a MB panel sometimes cheaper than a MLO. IMO, less trouble to just put in a MB panel than to have to add a disconnect.
Edit: I agree with needing a 200A.