Romex now has to be derated going though holes in wood structures? We are using the 2011 NEC here and I don't see any exceptions in the Washington Administrative Code(which supersedes NEC).

I didn't remember that when taking my continuing education class, but have recently gone to work for another contractor who has contracts for mixed use buildings that are stick built. We are using romex in the dwelling units so I thought I would read up(years since I used romex) and 334.80 directs you back to the conduit fill table.

Am I crazy or misinterpreting?
Thanks,
H20