We have begun this installation and yes the transfer switch is rated and wired for 800 amps. We are installing a fused disconnect for the generator to insure it doesn't pull more than it can handle.
This house also has Geothermal heating and cooling which seems to draw less electricity then convential cooling anyways. I have checked the ampacity and it hasn't gone over 120 amps as of yet.
Now on grounding. As I understand(haven't checked with the AHJ yet)this is now the mpd and should be grounded/bonded as such. Also are you required to drive a ground rod and bond the generator?
