Nec Conduit Raceway: RMC
NEC Chapter 9 conduit and raceway dimensions — internal diameter, total area, and fill areas for EMT, RMC, IMC, PVC conduit types
| conduit type | trade size in | area 1 wire pct53 in2 (in2) | area 2 wires pct31 in2 (in2) | area over2 wires pct40 in2 (in2) | internal diameter in (in) | total area in2 (in2) |
|---|---|---|---|---|---|---|
| RMC | 1 | 0.47 | 0.275 | 0.355 | 1.063 | 0.887 |
| RMC | 1-1/2 | 1.098 | 0.642 | 0.828 | 1.624 | 2.071 |
| RMC | 1-1/4 | 0.809 | 0.473 | 0.61 | 1.394 | 1.526 |
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