30A ?It seems to be a bit too high for the wiper motor. 9 W% Y' Q9 n: A3 Q: n1 h! G5 u: V7 u/ v) v8 R# k
Debris builds up in the cowl areas might interferes with the movement of the wiper arms. A sticky wiper arm will sometimes causes the fuse to blow. Try wickle the arm a bit and spray WD-40 at the base NOT THE NUT, then try again.