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Scooter Challenge Fuse?

2.6K views 2 replies 3 participants last post by  TX_Dj  
#1 ·
The Scooter Challenge rules say:

"The battery pack must contain a safety fuse rated to open at less that the maximum current capability of the batteries."

Why should the fuse rating be based on the batteries, instead of wires, controller, or the motor?

Note: I am NOT complaining, or trying to change the rules. I'm trying to learn how to choose the right components.
 
#3 ·
I think the point on that ruling is so that if someone has batteries which are rated for less discharge than what the scooter demands, it will shut down the scooter rather than cause a potential safety hazard from heat/fire/explosion/etc.

I.E. most scooters I've seen tend to come (or replaced) with batteries with a 1C rating... If you have a 12Ah battery rated for 1C Max burst and try to pull 20A for a "drag race" you could run into some serious problems.

Just speculation on my part, though. My new batteries that I will use are rated at 10C, but my controller is rated below that. As such I will fuse just over the controller's capability but well under the battery's capability.