Motor wires

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don_resqcapt19

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Location
Illinois
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retired electrician
I have two new dual voltage, 9 lead, delta motors where leads 1, 2 and 3 are one wire size larger than the other 6 leads. One motor is a 15 hp with #12s and #10s and the other is a 25 hp with #10s and #8s. I don't think I have ever seen this before and I don't see any electrical reason to do this. This is an added cost to the manufacturer so there must be a reason. Does anyone know?
 
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