Re: K-Rated Transformer
The K-Rating is a measure of the transformer's ability to tolerate the heat generated by the harmonic currents. You would simply be using a transformer that can tolerate more abuse that it is likely to see. It would be a bit of overkill, with a corresponding overcost, as Charlie said. But it gains you nothing in terms of extra capacity for adding load, and the distribution system will not notice the difference.
Danada.