The IP code classifies the “Ingress Protection” rating of an item (from objects, dust, water). This is important to understand as our products are being used outdoors and they have similar and different ratings.
The common rule to add a classification is that you go by the lowest IP rated item on any assembly. This means that your e-bike has items with a higher protection rating than the one stated. Which will be the one from the lowest rated item on it.
You can find more info visiting the following links:
Wikipedia IP Code
Wikipedia NEMA Enclosure Types