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NEC Conduit Fill
Types TW, THW, FEPB (6 thru 2), RHW and RHH (without outer covering)
| Conduit Size (Inches) | ||||||||||||
| AWG Size | 1/2 | 3/4 | 1 | 11/4 | 11/2 | 2 | 21/2 | 3 | 31/2 | 4 | 5 | 6 |
| 6 | 1 | 2 | 4 | 7 | 10 | 16 | 23 | 36 | 48 | 62 | 97 | 141 |
| 4 | 1 | 1 | 3 | 5 | 7 | 12 | 17 | 27 | 36 | 47 | 73 | 106 |
| 3 | 1 | 1 | 2 | 4 | 6 | 10 | 15 | 23 | 31 | 40 | 63 | 91 |
| 2 | 1 | 1 | 2 | 4 | 5 | 9 | 13 | 20 | 27 | 34 | 54 | 78 |
| 1 | - | 1 | 1 | 3 | 4 | 6 | 9 | 14 | 19 | 25 | 39 | 57 |
| 0 | - | 1 | 1 | 2 | 3 | 5 | 8 | 12 | 16 | 21 | 33 | 49 |
| 00 | - | 1 | 1 | 1 | 3 | 5 | 7 | 10 | 14 | 18 | 29 | 41 |
| 000 | - | 1 | 1 | 1 | 2 | 4 | 6 | 9 | 12 | 15 | 24 | 35 |
| 0000 | - | - | 1 | 1 | 1 | 3 | 5 | 7 | 10 | 13 | 20 | 29 |
| 250 | - | - | 1 | 1 | 1 | 2 | 4 | 6 | 8 | 10 | 16 | 23 |
| 300 | - | - | 1 | 1 | 1 | 2 | 3 | 5 | 7 | 9 | 14 | 20 |
| 350 | - | - | - | 1 | 1 | 1 | 3 | 4 | 6 | 8 | 12 | 18 |
| 400 | - | - | - | 1 | 1 | 1 | 2 | 4 | 5 | 7 | 11 | 16 |
| 500 | - | - | - | 1 | 1 | 1 | 1 | 3 | 4 | 6 | 9 | 14 |
| 600 | - | - | - | - | 1 | 1 | 1 | 3 | 4 | 5 | 7 | 11 |
| 700 | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 7 | 10 |
| 750 | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 4 | 6 | 9 |