[wengejor]

My understanding was that even at low current levels the chinese armature can overheat and then the insulation on the windings will melt then cause a short which results in a fire. The over heating comes from lack of proper airflow through the motor. In that case the Bosch specified fuse wouldn't break even though the motor stops running and is on fire!

I wasn't the person at Bosch doing the study but I got to periodically see melted components on the cart in the hallway.

You could put a thermocouple on there for the first few times you run it just to see what the operating temps on the motor are over time. Then just make sure you don't run it too long such that the temps get out of control.