The xfmr will draw as much power as it can until it blows. Its like a motor. It's stupid.
You can figure the maximum amount of output with a given input. But you are not making much sense. It is either drawing 1.5 amps or 15 amps? Which is it?
line side calculated current = 6.25
Load side calculated current = unknown. no secondary voltage to calculate with.
You are really in the wrong forum. If you are an electrician go to www.electriciantalk.com
. They are all professionals. This question does not belong in here. IMO.