Was looking up something else and found rthis in the archives - not sure who posted it though. Does this help ?
When the idea of fusing the stator first came up on the main VROC news group, I dug into the manual and found that the specs of the charging system state that the stock stator & regulator/rectifier can generate 24 Amps at 8,000 RPM's. Well, since very few of us would be willing to run our VN750 at that RPM for very long, I suggested we go with 20 Amp fuses because the stator and wire are supposed to handle 24 Amps. This should protect your stator and wire harness from over-current, but it will not protect your stator if the motor gets too hot.