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SE12L200S has a 3`` knockout but says it can only use a 2.5`` hub. Can a 3`` conduit be installed?

A 2.5`` hub needs to overlap the knockout openning a little and so is the maximum size that can be used on a 3`` knockout. A 3`` conduit can be installed with a locknut but, in this case a hub cannot be used.

CTA-ID : 2016155
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