I would say the most "NEC-ish" problem in the Transformer Image would be the Grounding Electrode Conductor does not terminate directly to the "X-0" terminal.
Next would be the "what appear to be" too small EGCs - at least for the Secondary side's feeders the EGC looks a wee bit small.
Odd to me (at least) is the Phase arrangement here - more specific, the color code arrangement, vs. terminals.
Starting from the left, we have:
<OL TYPE=1>
[*] An "X" terminal tagged Blue (would be typically X-3),
[*] An "H" terminal tagged Orange (would be typically H-2),
[*] The common point of the Secondary coils - "X-0",
[*] An "X" terminal tagged Red (would be typically X-2),
[*] An "H" terminal tagged Brown (would be typically H-1),
[*] An "XH" terminal tagged Yellow (would be typically H-3),
[*] An "X" terminal tagged Black (would be typically X-1).
</OL>
Not that this is any violation, just kind of an odd arrangement to me.
Anyone find it strange?
Scott35