I have an engineering firm saying to put a sub panel in a residential attic space. There is walk up access w/ a door at the top of the stairs. The space is unfinished w/ insulation at the floor joists only. I thought for sure over current protection devices were not allowed in attics, clothes closets and bathrooms. I look for 3 hours last night and only found Art. 110.11 .....conductors or equipment not to be exposed to excessive heat, and Art. 240 24 (C) reference to FPN 110.11 (D) not in the vicinity of easily ignitable material i.e. clothes closets.