Clear the air time....
The 'attic' would have to be accessable, not one that requires a portable ladder, but fixed stairs. The ceiling height of 6'6" is required, with the 30-36 clearances. A clear path from the point of egress is also necessary; no crawling thru trusses.
I have not seen, nor heard of any EC thinking about the service being in the attic, but...ya never know.
