Stubbing up under a 225 KVA Transformer

[Gary11734]

I know this has to be somewhere on the forum but I couldn't locate it;

I want to stub under a 225 KVA transformer, line and load. Can I cut a hole and stub a PVC conduit up through the bottom?

Or, can I do the same but have to put a fitting on the end? Putting a fitting doesn't make sense since it would make a solid connection and transformers vibrate.

I cant find anywhere where this would be a violation...

Thanks for the help...

Gary