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EMT, IMC and Rigid Conduit
| Trade Size in Inches | Wire Size (THWN, THHN) Conductor Size AWG/kcmil | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14 | 12 | 10 | 8 | 6 | 4 | 3 | 2 | 1 | 1/0 | 2/0 | 3/0 | 4/0 | 250 | 300 | 350 | 400 | 500 | 600 | 700 | 750 | ||
| 1/2 | EMT | 12 | 9 | 5 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| IMC | 14 | 10 | 6 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | |
| GALV | 13 | 9 | 6 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | |
3/4 |
EMT | 22 | 16 | 10 | 6 | 4 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | -- | -- | -- | -- |
| IMC | 24 | 17 | 11 | 6 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | -- | -- | -- | -- | |
| GALV | 22 | 16 | 10 | 6 | 4 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | -- | -- | -- | -- | |
| 1 | EMT | 35 | 26 | 16 | 9 | 7 | 4 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | -- |
| IMC | 39 | 29 | 18 | 10 | 7 | 4 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | |
| GALV | 36 | 26 | 17 | 9 | 7 | 4 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -- | -- | -- | -- | |
| 1 1/4 | EMT | 61 | 45 | 28 | 16 | 12 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -- |
| IMC | 68 | 49 | 31 | 18 | 13 | 8 | 6 | 5 | 4 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| GALV | 63 | 46 | 29 | 16 | 12 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | -- | |
| 1 1/2 | EMT | 84 | 61 | 38 | 22 | 16 | 10 | 8 | 7 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| IMC | 91 | 67 | 42 | 24 | 17 | 10 | 9 | 7 | 5 | 4 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| GALV | 85 | 62 | 39 | 22 | 16 | 10 | 8 | 7 | 5 | 4 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Trade Size in Inches | Wire Size (THWN, THHN) Conductor Size AWG/kcmil | |||||||||||||||||||||
| 14 | 12 | 10 | 8 | 6 | 4 | 3 | 2 | 1 | 1/0 | 2/0 | 3/0 | 4/0 | 250 | 300 | 350 | 400 | 500 | 600 | 700 | 750 | ||
2 |
EMT | 138 | 101 | 63 | 36 | 26 | 16 | 13 | 11 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| IMC | 149 | 109 | 68 | 39 | 38 | 17 | 15 | 12 | 9 | 8 | 6 | 5 | 4 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | |
| GALV | 140 | 102 | 64 | 37 | 27 | 16 | 14 | 11 | 8 | 7 | 6 | 5 | 4 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | |
| 2 1/2 | EMT | 241 | 176 | 111 | 64 | 46 | 28 | 24 | 20 | 15 | 12 | 10 | 8 | 7 | 6 | 5 | 4 | 4 | 3 | 2 | 2 | 1 |
| IMC | 211 | 154 | 97 | 56 | 40 | 25 | 21 | 17 | 13 | 11 | 9 | 7 | 6 | 5 | 4 | 4 | 3 | 3 | 2 | 1 | 1 | |
| GALV | 200 | 146 | 92 | 53 | 38 | 23 | 20 | 17 | 12 | 10 | 8 | 7 | 6 | 5 | 4 | 3 | 3 | 2 | 1 | 1 | 1 | |
3 |
EMT | 364 | 226 | 167 | 96 | 69 | 43 | 36 | 30 | 22 | 19 | 16 | 13 | 11 | 9 | 7 | 6 | 6 | 5 | 4 | 3 | 3 |
| IMC | 362 | 238 | 150 | 86 | 62 | 38 | 32 | 27 | 20 | 17 | 14 | 12 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 3 | 3 | |
| GALV | 309 | 225 | 142 | 82 | 59 | 36 | 31 | 26 | 19 | 16 | 13 | 11 | 9 | 7 | 6 | 5 | 5 | 4 | 3 | 3 | 3 | |
| 3 1/2 | EMT | 476 | 347 | 219 | 126 | 91 | 56 | 47 | 40 | 29 | 25 | 20 | 17 | 14 | 11 | 10 | 9 | 8 | 6 | 5 | 4 | 4 |
| IMC | 436 | 318 | 200 | 115 | 83 | 51 | 43 | 36 | 27 | 23 | 19 | 16 | 13 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 4 | |
| GALV | 412 | 301 | 189 | 109 | 79 | 48 | 41 | 34 | 25 | 21 | 18 | 15 | 12 | 10 | 8 | 7 | 7 | 5 | 4 | 4 | 4 | |
4 |
EMT | 608 | 443 | 279 | 161 | 116 | 71 | 60 | 51 | 37 | 32 | 26 | 22 | 18 | 15 | 13 | 11 | 10 | 8 | 7 | 6 | 5 |
| IMC | 562 | 410 | 258 | 149 | 107 | 66 | 56 | 47 | 35 | 29 | 24 | 20 | 17 | 13 | 12 | 10 | 9 | 7 | 6 | 5 | 5 | |
| GALV | 531 | 387 | 244 | 140 | 101 | 62 | 53 | 44 | 33 | 27 | 23 | 19 | 16 | 13 | 11 | 10 | 8 | 7 | 6 | 5 | 5 | |
Above information referenced from tables C1, C4, and C8 in the National Electric Code of 2008.
For more information on the following types of conduit, please see the table listed below in the appendix C of the National Electric Code of 2008.
Rigid PVC Conduit, Schedule 80 -- Table C9
Rigid PVC Conduit, Schedule 40 -- Table C10
Flexible Metallic Conduit -- Table C3
Liquidtight Flexible Metallic Conduit -- Table C7
Liquidtight Flexible Nonmetallic Conduit (Type FNMC-B)-- Table C5