Steve: I agree with Bob on this. I typically just apply
440.22(C) Protective Device Rating Not to Exceed the Manufacturer’s Values. Where maximum protective device ratings shown on a manufacturer’s overload relay table for use with a motor controller are less than the rating or setting selected in accordance with 440.22(A) and (B), the protective device rating shall not exceed the manufacturer’s values marked on the equipment.
Not that the math is that difficult, but in my opinion, why go through it?
