215.10 for feeders.
230.95 for services.

215.10 refers to 230.95 and says that the specifications for feeder GFP are the same as service GFP. It specifically says that the GFP is required on the load side of the feeder unless it is provided at the supply side of the feeder.

I was not suggesting that GFP was required on the primary side of the transformer, nor was I suggesting that it was required prior to the disconnect in the building. I was simply suggesting a method that could be used to provide the secondary side GFP right at the transformer.

-Jon