Romex in EMT

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Kimura

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Location
Delaware
Was hoping to run 14/2 in 1/2" EMT for a 15' run. See nothing in 358.12 around it. Is it permitted ? Coworker says no, but I can't find anything to state it's NOT allowed.

thank you kindly
 
infinity

infinity

Moderator
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Location
New Jersey
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Journeyman Electrician
Kimura said:
Was hoping to run 14/2 in 1/2" EMT for a 15' run. See nothing in 358.12 around it. Is it permitted ? Coworker says no, but I can't find anything to state it's NOT allowed.

thank you kindly
Click to expand...
Indoors it's permitted to run NM cable in EMT. You calculate the fill at 53% using the width of the cable as of it were round.
 
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wwhitney

Senior Member
Location
Berkeley, CA
Occupation
Retired
infinity said:
Indoors it's permitted to run NM cable in EMT. You calculate the fill at 53% using the width of the cable as of it were round.
Click to expand...
And for the OP, Southwire shows 14/2 as having a width of 0.368", while Table 4 Chapter 9 shows 1/2" EMT has an ID of 0.622". So the fill ratio for a single 14/2 cable in 1/2" EMT is (368/622)^2 = 35%.

In fact it shows 12/2 as having a width of 0.418", so one 12/2 cable would have a fill ratio of (418/622) = 45%.

Cheers, Wayne
 
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