Branch Circuits & WiringQuestion 195 of 521
Per Annex C, Table C.1, what is the maximum number of 12 AWG THHN conductors permitted in 3/4" EMT?
a.9
b.22
c.16
d.12
Explanation
Table C.1 lists 16 for 12 AWG THHN in 3/4" EMT. 22 is the count for 14 AWG in 3/4" EMT, and 9 is the count for 12 AWG in the smaller 1/2" EMT.
Law Reference: 2023 NEC Annex C, Table C.1Practice all 521 questions free — no signup required.
Related questions on this topic
- Per Chapter 9, Table 1, what is the maximum permitted fill percentage when only one conductor is installed in a conduit?
- Per Annex C, Table C.1, what is the maximum number of 12 AWG THHN conductors permitted in 1/2" EMT?
- Per Annex C, Table C.1, what is the maximum number of 14 AWG THHN conductors permitted in 1/2" EMT?
- Per Annex C, Table C.1, what is the maximum number of 10 AWG THHN conductors permitted in 1/2" EMT?
- The internal cross-sectional area of 1/2" EMT is 0.304 in³ per Table 4. For three or more conductors, what usable fill area (40%) is available?
- The internal area of 3/4" EMT is 0.533 in² per Table 4. What is the 40% usable fill area for three or more conductors?
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