I am planning to install a sub-panel in my unfinished basement. The only good location for it is in violation of 110.26(F) in regard to 'foreign systems'...

(b) Foreign Systems. The area above the dedicated space

required by 110.26(F)(1)(a) shall be permitted to contain foreign systems provided protection is installed to avoid damage to the electrical equipment from condensation, leaks, or breaks in such foreign systems.

There is a 1/2" water pipe running across the joists above where the panel will be located (parallel with the panel face), so It seems I need to install some kind of drip protection. Would I be able to use a sort of 1/2 round gutter suspended from the joists to provide the required protection, or does it need something more elaborate. I did not buy the panel yet, so if I get a weatherproof 'outdoor' panel, would that be sufficient? If so, then I could mount it directly to the concrete block wall, right (no air gap needed)?