You will need to replace the motor peckerhead with a "Hoffman" type box appropriate for the environment. This is a common field mod for large motor feeders or parallel runs. Some motors can be ordered with oversized peckerheads, but lead time and cost usually rule out this option unless it is a specification controlled project.
I would think that this motor would be a good choice to use a parralelled feeder. (Two runs of 1 1/4 with (3) 1/0 each)
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