Thanks for the replies.
To answer the questions, Yes: he is planning on installing a gutter over each panel. I assume he'll be exploiting at least the 10' tap rule since the panels will all be within 10' of the main feeder.
And thanks especially to Scott35. Your suggestions mirrored my thoughts almost exactly. Make the first panel feed the other three and all panels get their own much smaller circuit than the 3/0 they're proposing.
I'll call my EC up and have a talk. They've done a few other jobs for us and I've had good experiences working with them. This one job just seemed strange. Maybe they've got a few thousand feet of 3/0 THHN left over from another job they want to get rid of. Who knows.
But if this doesn't raise any red flags for anybody (other than cost) then I guess I don't really care how they do it as long as I'm not paying more because of a strange design.
Thanks again.
