Over 112.5kva xfmr outdoor

[hhsting]

I have dry type 150kva xfmr 208V to 277/480V installed outdoor.

450.22 says over 112.5kva xfmr shall not be located 12 in of combustible materials of buildings.

The 150kva xfmr is located 14 in from the wall of building.

The part about 450.22 thats confusing is what is combustible materials of building? Is it wall of the building or something else?

 

[augie47]

I would say it "says what it says"... You would not want to build a wooden fence right against it, etc.
That said, I'd almost assure the transformer would meet the specifications noted after the word "unless" in that Code Section so the 12" is moot unless required by the manufacturer.