How many 8 AWG THHN/THWN-2 fit in conduit
8 AWG THHN/THWN-2 is about 0.216 in across and 0.0366 sq in with its insulation (Chapter 9, Table 5). This is the most of it each conduit may hold, all the same size.
| Trade size | EMT | IMC | Rigid | PVC Sch 40 | PVC Sch 80 | Flex | Liquidtight | ENT |
|---|---|---|---|---|---|---|---|---|
| 3/8" | 1 | 1 | ||||||
| 1/2" | 3 | 3 | 3 | 3 | 1 | 3 | 3 | 3 |
| 3/4" | 6 | 6 | 6 | 5 | 4 | 6 | 6 | 5 |
| 1" | 9 | 10 | 9 | 9 | 7 | 9 | 9 | 9 |
| 1-1/4" | 16 | 18 | 16 | 16 | 13 | 14 | 16 | 16 |
| 1-1/2" | 22 | 24 | 22 | 21 | 18 | 20 | 21 | 21 |
| 2" | 36 | 39 | 37 | 36 | 31 | 35 | 35 | 36 |
| 2-1/2" | 64 | 56 | 53 | 51 | 45 | 53 | 53 | |
| 3" | 96 | 86 | 82 | 79 | 70 | 77 | 81 | |
| 3-1/2" | 126 | 115 | 109 | 106 | 95 | 105 | 106 | |
| 4" | 161 | 149 | 140 | 137 | 123 | 137 | 138 | |
| 5" | 221 | 216 | 195 | |||||
| 6" | 318 | 312 | 279 |
Empty cells: that type isn't made in that size.
Other sizes of THHN/THWN-2
#14#12#10#8#6#4#3#2#1#1/0#2/0#3/0#4/0250 kcmil300 kcmil350 kcmil400 kcmil500 kcmil600 kcmil700 kcmil750 kcmil800 kcmil900 kcmil1000 kcmil