Roger,
I have never said that this code rule is logical or makes sense. It is my opinion that the panel intends that the required outside receptacle be accessible while standing on the earth and not a porch or patio. I see no reason for this rule, but I think that is the intent of CMP2. The NJACT changes book says "Interpretation of 210.52(E) from NFPA staff and from members of the code panel has been that a receptacle outlet located above a porch or deck that is accessible at grade level does not meet the requirement of being "accessible from grade level."
Don
