Flexible Conduit fill

Old 03-06-19, 08:29 AM
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Flexible Conduit fill

I'm about to install a generator transfer panel with 10 circuits, Reliant model 310A. I had planned to use only 8 circuits, but the generator transfer panel instruction state that any multi wire branch circuits must have both hots switched therefor I need all 10 switches due to the house wiring. It came with 1 inch aluminum flex conduit and the wire bundle seems a bit snug. There are 4ea 10 gauge wires and 17 ea. 12 gauge wires in the conduit. Should I change out to a larger conduit ? Conduit is 12 inches in length.
Old 03-06-19, 10:42 AM
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Conduits less than 24" in length you can completely fill so long as the wires are not damaged. Conduits greater than 24" are limited to 40% fill.

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