I'm doing a B. Nursing at uni and just skimming the clinical practice ladders and adding up the total number of days of clinical placement, I've counted 185 days all together. So that would be 1480 hours over three years worth of in-hospital clinical placement. I haven't counted lab sessions or anything like that because that's not really clinical placement.
I finished my training a hundred (well, seventeen) years ago, when it really was "training" so am no use to you at all, but this post on an unrelated thread suggests at least some Aus institutions provide more clinical hours than their US eqivalents.