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NEC Reason for 31%-2 Conductor Fill?
Why are 2 conductors in conduit/tubing limlted to 31% fill while 3 conductors with the potential of jamming is allowed 40%. I work overseas on a USAF base where usually a 4 conductor cable is run with a smaller ground wire. Jim- 6yhnmju7
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- Forum: IEC (electrotechnical) Code Issues
