hello all, I'm trying to win a bet here. My boss said that you can run romex underground in condit . I said you need to run either U.F or thwn. he also said that thhn was fine in the ground as long as it is in conduit. we all know that romex isn't sutable for wet locations, but i cant find in the code that says that underground even in condit is a wet location .. any help would be apprecated . thanks