My city uses 2011 NEC.
I would like to install a 125 Amp rated Spa Panel as a subpanel directly below my 200 Amp main circuit breaker panel to be able to use two 50 Amp GFI circuits. I already have this Spa Panel with a breaker and would like to use it: http://www.midwestelectric.com/products/spa-panels/spa-panels-0
My main circuit breaker panel is flush mounted in a drywalled 2x4 wall. The spa panel has an open knockout in the top that would align perfectly with a knockout in the bottom of my main panel. I would use a piece of straight conduit to connect the two panels.
My question is:
Can the spa panel be recessed/flush-mounted in the wall or is it required that it be surfaced mounted to the wall?
The reason I want it to be recessed/flush-mounted is so I can use a simple straight piece of conduit to connect the two panels. Surface mounting would require using flex conduit that would poke through the drywall. Also, the spa panel is hanging off the wall in a high traffic area vs. a clean out-of-the-way flush mount.
This is a picture of what I currently have that I'm not happy with. The conduit body at the bottom goes into the front of a junction box (does NEC allow that?) and the junction box has a piece of straight conduit up to the bottom of the main panel in the wall you can't see.