In the near future I am installing a garburator in a commercial establishment. The motor is a 3 phase 208 volt unit and I am wondering if I need to install this with a GFI breaker? (three pole). I can't find anything about this in the CEC book on this....I have seen these units in other establishments with GFI breakers. The problem.... the panel I am needing to feed this unit from is a Westinghouse featuring "BAB type" bolt on breakers. I have come to the understanding from a local wholesaler that there is no GFI 3 pole bolt on that will work on this panel (I could probably install a sub panel to possibly another brand????) The easiest/cheapest would be to have a non GFI situation. I am hoping I can find it in the code book.....Can anybody help me with this?

You can't find it in the code book because there is no reference to this. No rule = no requirment.
No GFCI is required and since most of these are installed into conductive piping I think the possibility of stray current is very low.