How many 4 AWG THHN/THWN-2 fit in conduit
4 AWG THHN/THWN-2 is about 0.324 in across and 0.0824 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" | 0 | 1 | ||||||
| 1/2" | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 3/4" | 2 | 3 | 2 | 1 | 1 | 2 | 2 | 1 |
| 1" | 4 | 4 | 4 | 4 | 3 | 4 | 4 | 4 |
| 1-1/4" | 7 | 8 | 7 | 7 | 6 | 6 | 7 | 7 |
| 1-1/2" | 10 | 11 | 10 | 9 | 8 | 9 | 9 | 9 |
| 2" | 16 | 17 | 16 | 16 | 14 | 16 | 15 | 16 |
| 2-1/2" | 28 | 25 | 23 | 22 | 20 | 24 | 23 | |
| 3" | 43 | 38 | 36 | 35 | 31 | 34 | 36 | |
| 3-1/2" | 56 | 51 | 48 | 47 | 42 | 46 | 47 | |
| 4" | 71 | 66 | 62 | 61 | 54 | 61 | 61 | |
| 5" | 98 | 96 | 86 | |||||
| 6" | 141 | 138 | 124 |
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