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Thread: Running Romex in conduit

  1. #1
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    Running Romex in conduit

    I'm doing some electrical work at this electronic manufacturing facility. I noticed that whoever did the electric before me ran 12-2 Romex in 1/2" EMT. Does this meet code. I didn't think Romex in conduit was to code. If not why? Is it a heat related thing?

  2. #2
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    Quote Originally Posted by horrorsix
    I'm doing some electrical work at this electronic manufacturing facility. I noticed that whoever did the electric before me ran 12-2 Romex in 1/2" EMT. Does this meet code. I didn't think Romex in conduit was to code. If not why? Is it a heat related thing?
    NM is allowed in pipe, but it usually isn't done because of fill issues. That, and theres no rainbow of colors available.

  3. #3
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    Quote Originally Posted by 480sparky
    NM is allowed in pipe, but it usually isn't done because of fill issues. That, and theres no rainbow of colors available.
    Thhn you use the 90C table for Amp rating romex you use the 60C table

  4. #4
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    It's perfectly fine.

    See any of the 3xx.22 sections, for example 358.22

    358.22 Number of Conductors
    The number of conductors shall not exceed that permitted by the percentage fill specified in Table 1, Chapter 9.
    Cables shall be permitted to be installed where such use is not prohibited by the respective cable articles. The number of cables shall not exceed the allowable percentage fill specified in Table 1, Chapter 9.
    Roger
    Moderator

  5. #5
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    Quote Originally Posted by roger
    It's perfectly fine.

    See any of the 3xx.22 sections, for example 358.22
    Roger
    Hey Roger

    Do you have the chart that had been posted with the dimensions of nm. I would guess that 12 nm will be overfill for 1/2" emt. Just a guess.

    I also bet a residential guy did that job. :grin:

  6. #6
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    Quote Originally Posted by Dennis Alwon
    Hey Roger

    Do you have the chart that had been posted with the dimensions of nm. I would guess that 12 nm will be overfill for 1/2" emt. Just a guess.
    Dennis I don't have the chart but I do remember it

    Quote Originally Posted by Dennis Alwon
    I also bet a residential guy did that job. :grin:

    Very possibly the case. :wink:

    Roger
    Moderator

  7. #7
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    ever try pulling romex in 1/2" conduit??? NOT FUN.
    Got a Ph.D in DIY...

  8. #8
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    Quote Originally Posted by QES
    ever try pulling romex in 1/2" conduit??? NOT FUN.
    One run of 14/2 or 12/2 is not that difficult.

  9. #9
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    14-2 NMB .1018
    12-2 NMB .1320
    10-2 NMB .1917
    8-2 NMB .2942
    6-2 NMB .3664
    14-3 NMB .0740
    12-3 NMB .0946
    10-3 NMB .1399
    8-3 NMB .2507
    6-3 NMB .3318
    14-2 UF .1405
    12-2 UF .1684
    10-2 UF .2107
    8-2 UF .3610
    6-2 UF .4657
    14-3 UF .2651
    12-3 UF .3078
    10-3 UF .4151
    8-3 UF .8808
    6-3 UF 1.1747

    Don't forget that it's 53% for one cable.

  10. #10
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    Quote Originally Posted by mdshunk
    14-2 NMB .1018
    12-2 NMB .1320
    10-2 NMB .1917
    8-2 NMB .2942
    6-2 NMB .3664
    14-3 NMB .0740
    12-3 NMB .0946
    10-3 NMB .1399
    8-3 NMB .2507
    6-3 NMB .3318
    14-2 UF .1405
    12-2 UF .1684
    10-2 UF .2107
    8-2 UF .3610
    6-2 UF .4657
    14-3 UF .2651
    12-3 UF .3078
    10-3 UF .4151
    8-3 UF .8808
    6-3 UF 1.1747

    Don't forget that it's 53% for one cable.
    What type of dimensions are these? Noticed that 14-2 is greater than 14-3. As is 12
    Tom
    TBLO

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