NEC 2002: Chapter 9 Table 4
Dimensions and Percent Area of Conduit and Tubing (See Chapter 9 Table 1 for allowed use of conduit area) | |||||||||||||
Article 358 - Electrical Metallic Tubing (EMT) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
16 | 1⁄2 | 15.8 | 0.622 | 196 | 0.304 | 118 | 0.182 | 104 | 0.161 | 61 | 0.094 | 78 | 0.122 |
21 | 3⁄4 | 20.9 | 0.824 | 343 | 0.533 | 206 | 0.32 | 182 | 0.283 | 106 | 0.165 | 137 | 0.213 |
27 | 1 | 26.6 | 1.049 | 556 | 0.864 | 333 | 0.519 | 295 | 0.458 | 172 | 0.268 | 222 | 0.346 |
35 | 1 1⁄4 | 35.1 | 1.38 | 968 | 1.496 | 581 | 0.897 | 513 | 0.793 | 300 | 0.464 | 387 | 0.598 |
41 | 1 1⁄2 | 40.9 | 1.61 | 1314 | 2.036 | 788 | 1.221 | 696 | 1.079 | 407 | 0.631 | 526 | 0.814 |
53 | 2 | 52.5 | 2.067 | 2165 | 3.356 | 1299 | 2.013 | 1147 | 1.778 | 671 | 1.04 | 866 | 1.342 |
63 | 2 1⁄2 | 69.4 | 2.731 | 3783 | 5.858 | 2270 | 3.515 | 2005 | 3.105 | 1173 | 1.816 | 1513 | 2.343 |
78 | 3 | 85.2 | 3.356 | 5701 | 8.846 | 3421 | 5.307 | 3022 | 4.688 | 1767 | 2.742 | 2280 | 3.538 |
91 | 3 1⁄2 | 97.4 | 3.834 | 7451 | 11.545 | 4471 | 6.927 | 3949 | 6.119 | 2310 | 3.579 | 2980 | 4.618 |
103 | 4 | 110.1 | 4.334 | 9521 | 14.753 | 5712 | 8.852 | 5046 | 7.819 | 2951 | 4.573 | 3808 | 5.901 |
Article 362 - Electrical Nonmetallic Tubing (ENT) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
16 | 1⁄2 | 14.2 | 0.56 | 158 | 0.246 | 95 | 0.148 | 84 | 0.131 | 49 | 0.076 | 63 | 0.099 |
21 | 3⁄4 | 19.3 | 0.76 | 293 | 0.454 | 176 | 0.272 | 155 | 0.24 | 91 | 0.141 | 117 | 0.181 |
27 | 1 | 25.4 | 1 | 507 | 0.785 | 304 | 0.471 | 269 | 0.416 | 157 | 0.243 | 203 | 0.314 |
35 | 1 1⁄4 | 34 | 1.34 | 908 | 1.41 | 545 | 0.846 | 481 | 0.747 | 281 | 0.437 | 363 | 0.564 |
41 | 1 1⁄2 | 39.9 | 1.57 | 1250 | 1.936 | 750 | 1.162 | 663 | 1.026 | 388 | 0.6 | 500 | 0.774 |
53 | 2 | 51.3 | 2.02 | 2067 | 3.205 | 1240 | 1.923 | 1095 | 1.699 | 641 | 0.993 | 827 | 1.282 |
63 | 2 1⁄2 | — | — | — | — | — | — | — | — | — | — | — | — |
78 | 3 | — | — | — | — | — | — | — | — | — | — | — | — |
91 | 3 1⁄2 | — | — | — | — | — | — | — | — | — | — | — | — |
Article 348 - Flexible Metal Conduit (FMC) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
12 | 3⁄8 | 9.7 | 0.384 | 74 | 0.116 | 44 | 0.069 | 39 | 0.061 | 23 | 0.036 | 30 | 0.046 |
16 | 1⁄2 | 16.1 | 0.635 | 204 | 0.317 | 122 | 0.19 | 108 | 0.168 | 63 | 0.098 | 81 | 0.127 |
21 | 3⁄4 | 20.9 | 0.824 | 343 | 0.533 | 206 | 0.32 | 182 | 0.283 | 106 | 0.165 | 137 | 0.213 |
27 | 1 | 25.9 | 1.02 | 527 | 0.817 | 316 | 0.49 | 279 | 0.433 | 163 | 0.253 | 211 | 0.327 |
35 | 1 1⁄4 | 32.4 | 1.275 | 824 | 1.277 | 495 | 0.766 | 437 | 0.677 | 256 | 0.396 | 330 | 0.511 |
41 | 1 1⁄2 | 39.1 | 1.538 | 1201 | 1.858 | 720 | 1.115 | 636 | 0.985 | 372 | 0.576 | 480 | 0.743 |
53 | 2 | 51.8 | 2.04 | 2107 | 3.269 | 1264 | 1.961 | 1117 | 1.732 | 653 | 1.013 | 843 | 1.307 |
63 | 2 1⁄2 | 63.5 | 2.5 | 3167 | 4.909 | 1900 | 2.945 | 1678 | 2.602 | 982 | 1.522 | 1267 | 1.963 |
78 | 3 | 76.2 | 3 | 4560 | 7.069 | 2736 | 4.241 | 2417 | 3.746 | 1414 | 2.191 | 1824 | 2.827 |
91 | 3 1⁄2 | 88.9 | 3.5 | 6207 | 9.621 | 3724 | 5.773 | 3290 | 5.099 | 1924 | 2.983 | 2483 | 3.848 |
103 | 4 | 101.6 | 4 | 8107 | 12.566 | 4864 | 7.54 | 4297 | 6.66 | 2513 | 3.896 | 3243 | 5.027 |
Article 324 - Intermediate Metal Conduit (IMC) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
12 | 3⁄8 | — | — | — | — | — | — | — | — | — | — | — | — |
16 | 1⁄2 | 16.8 | 0.66 | 222 | 0.342 | 133 | 0.205 | 117 | 0.181 | 69 | 0.106 | 89 | 0.137 |
21 | 3⁄4 | 21.9 | 0.864 | 377 | 0.586 | 226 | 0.352 | 200 | 0.311 | 117 | 0.182 | 151 | 0.235 |
27 | 1 | 28.1 | 1.105 | 620 | 0.959 | 372 | 0.575 | 329 | 0.508 | 192 | 0.297 | 248 | 0.384 |
35 | 1 1⁄4 | 36.8 | 1.448 | 1064 | 1.647 | 638 | 0.988 | 564 | 0.873 | 330 | 0.51 | 425 | 0.659 |
41 | 1 1⁄2 | 42.7 | 1.683 | 1432 | 2.225 | 859 | 1.335 | 759 | 1.179 | 444 | 0.69 | 573 | 0.89 |
53 | 2 | 54.6 | 2.15 | 2341 | 3.63 | 1405 | 2.178 | 1241 | 1.924 | 726 | 1.125 | 937 | 1.452 |
63 | 2 1⁄2 | 64.9 | 2.557 | 3308 | 5.135 | 1985 | 3.081 | 1753 | 2.722 | 1026 | 1.592 | 1323 | 2.054 |
78 | 3 | 80.7 | 3.176 | 5115 | 7.922 | 3069 | 4.753 | 2711 | 4.199 | 1586 | 2.456 | 2046 | 3.169 |
91 | 3 1⁄2 | 93.2 | 3.671 | 6822 | 10.584 | 4093 | 6.351 | 3616 | 5.61 | 2115 | 3.281 | 2729 | 4.234 |
103 | 4 | 105.4 | 4.166 | 8725 | 13.631 | 5235 | 8.179 | 4624 | 7.224 | 2705 | 4.226 | 3490 | 5.452 |
Article 356 - Liquidtight Flexible Nonmetalic Conduit (LFNC-B) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
12 | 3⁄8 | 12.5 | 0.494 | 123 | 0.192 | 74 | 0.115 | 65 | 0.102 | 38 | 0.059 | 49 | 0.077 |
16 | 1⁄2 | 16.1 | 0.632 | 204 | 0.314 | 122 | 0.188 | 108 | 0.166 | 63 | 0.097 | 81 | 0.125 |
21 | 3⁄4 | 21.1 | 0.83 | 350 | 0.541 | 210 | 0.325 | 185 | 0.287 | 108 | 0.168 | 140 | 0.216 |
27 | 1 | 26.8 | 1.054 | 564 | 0.873 | 338 | 0.524 | 299 | 0.462 | 175 | 0.27 | 226 | 0.349 |
35 | 1 1⁄4 | 35.4 | 1.395 | 984 | 1.528 | 591 | 0.917 | 522 | 0.81 | 305 | 0.474 | 394 | 0.611 |
41 | 1 1⁄2 | 40.3 | 1.588 | 1276 | 1.981 | 765 | 1.188 | 676 | 1.05 | 395 | 0.614 | 510 | 0.792 |
53 | 2 | 51.6 | 2.033 | 2091 | 3.246 | 1255 | 1.948 | 1108 | 1.72 | 648 | 1.006 | 836 | 1.298 |
Article 356 - Liquidtight Flexible Nonmetalic Conduit (LFNC-A) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
12 | 3⁄8 | 12.6 | 0.495 | 125 | 0.192 | 75 | 0.115 | 66 | 0.102 | 39 | 0.06 | 50 | 0.077 |
16 | 1⁄2 | 16 | 0.63 | 201 | 0.312 | 121 | 0.187 | 107 | 0.165 | 62 | 0.097 | 80 | 0.125 |
21 | 3⁄4 | 21 | 0.825 | 346 | 0.535 | 208 | 0.321 | 184 | 0.283 | 107 | 0.166 | 139 | 0.214 |
27 | 1 | 26.5 | 1.043 | 552 | 0.854 | 331 | 0.513 | 292 | 0.453 | 171 | 0.265 | 221 | 0.342 |
35 | 11⁄4 | 35.1 | 1.383 | 968 | 1.502 | 581 | 0.901 | 513 | 0.796 | 300 | 0.466 | 387 | 0.601 |
41 | 11⁄2 | 40.7 | 1.603 | 1301 | 2.018 | 781 | 1.211 | 690 | 1.07 | 403 | 0.626 | 520 | 0.807 |
53 | 2 | 52.4 | 2.063 | 2157 | 3.343 | 1294 | 2.006 | 1143 | 1.772 | 669 | 1.036 | 863 | 1.337 |
Article 350 - Liquidtight Flexible Metal Conduit (LFMC) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
12 | 3⁄8 | 12.5 | 0.494 | 123 | 0.192 | 74 | 0.115 | 65 | 0.102 | 38 | 0.059 | 49 | 0.077 |
16 | 1⁄2 | 16.1 | 0.632 | 204 | 0.314 | 122 | 0.188 | 108 | 0.166 | 63 | 0.097 | 81 | 0.125 |
21 | 3⁄4 | 21.1 | 0.83 | 350 | 0.541 | 210 | 0.325 | 185 | 0.287 | 108 | 0.168 | 140 | 0.216 |
27 | 1 | 26.8 | 1.054 | 564 | 0.873 | 338 | 0.524 | 299 | 0.462 | 175 | 0.27 | 226 | 0.349 |
35 | 1 1⁄4 | 35.4 | 1.395 | 984 | 1.528 | 591 | 0.917 | 522 | 0.81 | 305 | 0.474 | 394 | 0.611 |
41 | 1 1⁄2 | 40.3 | 1.588 | 1276 | 1.981 | 765 | 1.188 | 676 | 1.05 | 395 | 0.614 | 510 | 0.792 |
53 | 2 | 51.6 | 2.033 | 2091 | 3.246 | 1255 | 1.948 | 1108 | 1.72 | 648 | 1.006 | 836 | 1.298 |
63 | 2 1⁄2 | 63.3 | 2.493 | 3147 | 4.881 | 1888 | 2.929 | 1668 | 2.587 | 976 | 1.513 | 1259 | 1.953 |
78 | 3 | 78.4 | 3.085 | 4827 | 7.475 | 2896 | 4.485 | 2559 | 3.962 | 1497 | 2.317 | 1931 | 2.99 |
91 | 3 1⁄2 | 89.4 | 3.52 | 6277 | 9.731 | 3766 | 5.839 | 3327 | 5.158 | 1946 | 3.017 | 2511 | 3.893 |
103 | 4 | 102.1 | 4.02 | 8187 | 12.692 | 4912 | 7.615 | 4339 | 6.727 | 2538 | 3.935 | 3275 | 5.077 |
129 | 5 | — | — | — | — | — | — | — | — | — | — | — | — |
155 | 6 | — | — | — | — | — | — | — | — | — | — | — | — |
Article 344 - Rigid Metal Conduit (RMC) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
12 | 3⁄8 | — | — | — | — | — | — | — | — | — | — | — | — |
16 | 1⁄2 | 16.1 | 0.632 | 204 | 0.314 | 122 | 0.188 | 108 | 0.166 | 63 | 0.097 | 81 | 0.125 |
21 | 3⁄4 | 21.2 | 0.836 | 353 | 0.549 | 212 | 0.329 | 187 | 0.291 | 109 | 0.17 | 141 | 0.22 |
27 | 1 | 27 | 1.063 | 573 | 0.887 | 344 | 0.532 | 303 | 0.47 | 177 | 0.275 | 229 | 0.355 |
35 | 1 1⁄4 | 35.4 | 1.394 | 984 | 1.526 | 591 | 0.916 | 522 | 0.809 | 305 | 0.473 | 394 | 0.61 |
41 | 1 1⁄2 | 41.2 | 1.624 | 1333 | 2.071 | 800 | 1.243 | 707 | 1.098 | 413 | 0.642 | 533 | 0.829 |
53 | 2 | 52.9 | 2.083 | 2198 | 3.408 | 1319 | 2.045 | 1165 | 1.806 | 681 | 1.056 | 879 | 1.363 |
63 | 2 1⁄2 | 63.2 | 2.489 | 3137 | 4.866 | 1882 | 2.919 | 1663 | 2.579 | 972 | 1.508 | 1255 | 1.946 |
78 | 3 | 78.5 | 3.09 | 4840 | 7.499 | 2904 | 4.499 | 2565 | 3.974 | 1500 | 2.325 | 1936 | 3 |
91 | 3 1⁄2 | 90.7 | 3.57 | 6461 | 10.01 | 3877 | 6.006 | 3424 | 5.305 | 2003 | 3.103 | 2584 | 4.004 |
103 | 4 | 102.9 | 4.05 | 8316 | 12.882 | 4990 | 7.729 | 4408 | 6.828 | 2578 | 3.994 | 3326 | 5.153 |
129 | 5 | 128.9 | 5.073 | 13050 | 20.212 | 7830 | 12.127 | 6916 | 10.713 | 4045 | 6.266 | 5220 | 8.085 |
155 | 6 | 154.8 | 6.093 | 18821 | 29.158 | 11292 | 17.495 | 9975 | 15.454 | 5834 | 9.039 | 7528 | 11.663 |
Article 352 - Rigid PVC Conduit (PVC), Schedule 80 | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
12 | 3⁄8 | — | — | — | — | — | — | — | — | — | — | — | — |
16 | 1⁄2 | 13.4 | 0.526 | 141 | 0.217 | 85 | 0.13 | 75 | 0.115 | 44 | 0.067 | 56 | 0.087 |
21 | 3⁄4 | 18.3 | 0.722 | 263 | 0.409 | 158 | 0.246 | 139 | 0.217 | 82 | 0.127 | 105 | 0.164 |
27 | 1 | 23.8 | 0.936 | 445 | 0.688 | 267 | 0.413 | 236 | 0.365 | 138 | 0.213 | 178 | 0.275 |
35 | 1 1⁄4 | 31.9 | 1.255 | 799 | 1.237 | 480 | 0.742 | 424 | 0.656 | 248 | 0.383 | 320 | 0.495 |
41 | 1 1⁄2 | 37.5 | 1.476 | 1104 | 1.711 | 663 | 1.027 | 585 | 0.907 | 342 | 0.53 | 442 | 0.684 |
53 | 2 | 48.6 | 1.913 | 1855 | 2.874 | 1113 | 1.725 | 983 | 1.523 | 575 | 0.891 | 742 | 1.15 |
63 | 2 1⁄2 | 58.2 | 2.29 | 2660 | 4.119 | 1596 | 2.471 | 1410 | 2.183 | 825 | 1.277 | 1064 | 1.647 |
78 | 3 | 72.7 | 2.864 | 4151 | 6.442 | 2491 | 3.865 | 2200 | 3.414 | 1287 | 1.997 | 1660 | 2.577 |
91 | 3 1⁄2 | 84.5 | 3.326 | 5608 | 8.688 | 3365 | 5.213 | 2972 | 4.605 | 1738 | 2.693 | 2243 | 3.475 |
103 | 4 | 96.2 | 3.786 | 7268 | 11.258 | 4361 | 6.755 | 3852 | 5.967 | 2253 | 3.49 | 2907 | 4.503 |
129 | 5 | 121.1 | 4.768 | 11518 | 17.855 | 6911 | 10.713 | 6105 | 9.463 | 3571 | 5.535 | 4607 | 7.142 |
155 | 6 | 145 | 5.709 | 16513 | 25.598 | 9908 | 15.359 | 8752 | 13.567 | 5119 | 7.935 | 6605 | 10.239 |
Articles 352 and 353 - Rigid PVC Conduit (PVC), Schedule 40, and HDPE Conduit (HDPE) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
12 | 3⁄8 | — | — | — | — | — | — | — | — | — | — | — | — |
16 | 1⁄2 | 15.3 | 0.602 | 184 | 0.285 | 110 | 0.171 | 97 | 0.151 | 57 | 0.088 | 74 | 0.114 |
21 | 3⁄4 | 20.4 | 0.804 | 327 | 0.508 | 196 | 0.305 | 173 | 0.269 | 101 | 0.157 | 131 | 0.203 |
27 | 1 | 26.1 | 1.029 | 535 | 0.832 | 321 | 0.499 | 284 | 0.441 | 166 | 0.258 | 214 | 0.333 |
35 | 1 1⁄4 | 34.5 | 1.36 | 935 | 1.453 | 561 | 0.872 | 495 | 0.77 | 290 | 0.45 | 374 | 0.581 |
41 | 1 1⁄2 | 40.4 | 1.59 | 1282 | 1.986 | 769 | 1.191 | 679 | 1.052 | 397 | 0.616 | 513 | 0.794 |
53 | 2 | 52 | 2.047 | 2124 | 3.291 | 1274 | 1.975 | 1126 | 1.744 | 658 | 1.02 | 849 | 1.316 |
63 | 2 1⁄2 | 62.1 | 2.445 | 3029 | 4.695 | 1817 | 2.817 | 1605 | 2.488 | 939 | 1.455 | 1212 | 1.878 |
78 | 3 | 77.3 | 3.042 | 4693 | 7.268 | 2816 | 4.361 | 2487 | 3.852 | 1455 | 2.253 | 1877 | 2.907 |
91 | 3 1⁄2 | 89.4 | 3.521 | 6277 | 9.737 | 3766 | 5.842 | 3327 | 5.161 | 1946 | 3.018 | 2511 | 3.895 |
103 | 4 | 101.5 | 3.998 | 8091 | 12.554 | 4855 | 7.532 | 4288 | 6.654 | 2508 | 3.892 | 3237 | 5.022 |
129 | 5 | 127.4 | 5.016 | 12748 | 19.761 | 7649 | 11.856 | 6756 | 10.473 | 3952 | 6.126 | 5099 | 7.904 |
155 | 6 | 153.2 | 6.031 | 18433 | 28.567 | 11060 | 17.14 | 9770 | 15.141 | 5714 | 8.856 | 7373 | 11.427 |
Article 352 - Type A, Rigid PVC Conduit (PVC) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
16 | 1⁄2 | 17.8 | 0.7 | 249 | 0.385 | 149 | 0.231 | 132 | 0.204 | 77 | 0.119 | 100 | 0.154 |
21 | 3⁄4 | 23.1 | 0.91 | 419 | 0.65 | 251 | 0.39 | 222 | 0.345 | 130 | 0.202 | 168 | 0.26 |
27 | 1 | 29.8 | 1.175 | 697 | 1.084 | 418 | 0.651 | 370 | 0.575 | 216 | 0.336 | 279 | 0.434 |
35 | 1 1⁄4 | 38.1 | 1.5 | 1140 | 1.767 | 684 | 1.06 | 604 | 0.937 | 353 | 0.548 | 456 | 0.707 |
41 | 1 1⁄2 | 43.7 | 1.72 | 1500 | 2.324 | 900 | 1.394 | 795 | 1.231 | 465 | 0.72 | 600 | 0.929 |
53 | 2 | 54.7 | 2.155 | 2350 | 3.647 | 1410 | 2.188 | 1245 | 1.933 | 728 | 1.131 | 940 | 1.459 |
63 | 2 1⁄2 | 66.9 | 2.635 | 3515 | 5.453 | 2109 | 3.272 | 1863 | 2.89 | 1090 | 1.69 | 1406 | 2.181 |
78 | 3 | 82 | 3.23 | 5281 | 8.194 | 3169 | 4.916 | 2799 | 4.343 | 1637 | 2.54 | 2112 | 3.278 |
91 | 3 1⁄2 | 93.7 | 3.69 | 6896 | 10.694 | 4137 | 6.416 | 3655 | 5.668 | 2138 | 3.315 | 2758 | 4.278 |
103 | 4 | 106.2 | 4.18 | 8858 | 13.723 | 5315 | 8.234 | 4695 | 7.273 | 2746 | 4.254 | 3543 | 5.489 |
129 | 5 | — | — | — | — | — | — | — | — | — | — | — | — |
155 | 6 | — | — | — | — | — | — | — | — | — | — | — | — |
Article 352 - Type EB, Rigid PVC Conduit (PVC) | |||||||||||||
Metric Designator | Trade Size | Nominal Internal Diameter | Total Area 100% | 60% |
1 Wire 53% |
2 Wires 31% |
Over 2 Wires 40% |
||||||
mm | in. | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | mm² | in.² | ||
16 | 1⁄2 | — | — | — | — | — | — | — | — | — | — | — | — |
21 | 3⁄4 | — | — | — | — | — | — | — | — | — | — | — | — |
27 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
35 | 1 1⁄4 | — | — | — | — | — | — | — | — | — | — | — | — |
41 | 1 1⁄2 | — | — | — | — | — | — | — | — | — | — | — | — |
53 | 2 | 56.4 | 2.221 | 2498 | 3.874 | 1499 | 2.325 | 1324 | 2.053 | 774 | 1.201 | 999 | 1.55 |
63 | 2 1⁄2 | — | — | — | — | — | — | — | — | — | — | — | — |
78 | 3 | 84.6 | 3.33 | 5621 | 8.709 | 3373 | 5.226 | 2979 | 4.616 | 1743 | 2.7 | 2248 | 3.484 |
91 | 3 1⁄2 | 96.6 | 3.804 | 7329 | 11.365 | 4397 | 6.819 | 3884 | 6.023 | 2272 | 3.523 | 2932 | 4.546 |
103 | 4 | 108.9 | 4.289 | 9314 | 14.448 | 5589 | 8.669 | 4937 | 7.657 | 2887 | 4.479 | 3726 | 5.779 |
129 | 5 | 135 | 5.316 | 14314 | 22.195 | 8588 | 13.317 | 7586 | 11.763 | 4437 | 6.881 | 5726 | 8.878 |
155 | 6 | 160.9 | 6.336 | 20333 | 31.53 | 12200 | 18.918 | 10776 | 16.711 | 6303 | 9.774 | 8133 | 12.612 |
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