I see your point about the definition.
However I think it is reasonable to assume that GFP is not required any sooner than OCP on the secondary side of a transformer. (ie-taps rules)
If we do not assume that than no transformer with an Wye output greater than 1000 amps can be used.
If we say 25', 50' or even a 100' is to far than 1" is also to far as there is no direction to follow other than the transformer tap rules.
