Every conduit,
counted.
A sheet for each of the common raceways: ½ to 2 inch EMT and ½ to 1 inch PVC Schedule 40 and Schedule 80. Each gives the inside diameter and area from NEC Chapter 9 Table 4, the 53, 31 and 40 percent limits, how many THHN conductors of each size fit, and whether the usual EV, dryer and subpanel runs go in.
| Conduit | ID | Area in² | 40 % in² | 14 | 12 | 10 | 6 |
|---|---|---|---|---|---|---|---|
| 1/2" EMT | 0.622" | 0.304 | 0.122 | 12 | 9 | 5 | 2 |
| 3/4" EMT | 0.824" | 0.533 | 0.213 | 22 | 16 | 10 | 4 |
| 1" EMT | 1.049" | 0.864 | 0.346 | 35 | 26 | 16 | 7 |
| 1 1/4" EMT | 1.380" | 1.496 | 0.598 | 61 | 45 | 28 | 12 |
| 1 1/2" EMT | 1.610" | 2.036 | 0.814 | 84 | 61 | 38 | 16 |
| 2" EMT | 2.067" | 3.356 | 1.342 | 138 | 101 | 63 | 26 |
| 1/2" PVC Schedule 40 | 0.602" | 0.285 | 0.114 | 11 | 8 | 5 | 1 |
| 3/4" PVC Schedule 40 | 0.804" | 0.508 | 0.203 | 21 | 15 | 9 | 4 |
| 1" PVC Schedule 40 | 1.029" | 0.832 | 0.333 | 34 | 25 | 15 | 6 |
| 1/2" PVC Schedule 80 | 0.526" | 0.217 | 0.087 | 9 | 6 | 4 | 1 |
| 3/4" PVC Schedule 80 | 0.722" | 0.409 | 0.164 | 17 | 12 | 7 | 3 |
| 1" PVC Schedule 80 | 0.936" | 0.688 | 0.275 | 28 | 20 | 13 | 5 |
Counts follow NEC Chapter 9 Tables 1, 4 and 5 with Note 7 rounding; they reproduce Annex C.