NEC Reason for 31%-2 Conductor Fill?
NEC Reason for 31%-2 Conductor Fill?
(OP)
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
Jim





RE: NEC Reason for 31%-2 Conductor Fill?
RE: NEC Reason for 31%-2 Conductor Fill?