Branch Circuits & WiringQuestion 196 of 521
Per Annex C, Table C.1, what is the maximum number of 10 AWG THHN conductors permitted in 1/2" EMT?
a.9
b.7
c.3
d.5
Explanation
Table C.1 lists 5 for 10 AWG THHN in 1/2" EMT. 9 is the value for 12 AWG, 3 is the value for 8 AWG, and 7 is not listed for this size.
Law Reference: 2023 NEC Annex C, Table C.1Practice all 521 questions free — no signup required.
Related questions on this topic
- 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 12 AWG THHN conductors permitted in 3/4" 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?
- Given a 40% usable fill area of 0.213 in² (3/4" EMT) and a 12 AWG THHN cross-sectional area of 0.0133 in² (Table 5), how many 12 AWG THHN conductors fit?
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