My t&p is on top.

But it doesn't drain like that!

NOTHING about that install is correct.

If an inspector sees it, he'll not only fail that, he'll start looking around for what else is wrong, and fail that too. Usually anybody that does work that bad screws up everything they touch.

I'm not sure you're actually required to run the t&p line outside. I've seen a lot that just drain on the floor, which will make a mess, but at least it saves your house from an explosion. (watch Mythbusters. Scarey!)