Q: We're looking at a choice between buying some motors from overseas, advertised as meeting NEMA, CSA standards, versus a domestic source. We're assured that frame size dimensions and all the electrical performace will be within Canadian standards. Is there anything else to be concerned about?
A: Two possibilites - heating curves (time versus current) that determine the electrical protection requirments: and some mechanical parts, such as fasteners, may match metric standards, and there may be some differences in bearings. While these are not operating concerns, they will affect maintenance, Warranty and repairs.