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(C) Metric Designators and Trade Sizes
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Metric designators and trade sizes for conduit, tubing, and associated fittings and accessories shall be as designated in Table 300.1(C).
Table 300.1(C) Metric Designators and Trade Sizes
| Metric Designator | Trade Size |
|---|---|
| 12 | 3/8 |
| 16 | 1/2 |
| 21 | 3/4 |
| 27 | 1 |
| 35 | 11/4 |
| 41 | 11/2 |
| 53 | 2 |
| 63 | 21/2 |
| 78 | 3 |
| 91 | 31/2 |
| 103 | 4 |
| 129 | 5 |
| 155 | 6 |
| Note: The metric designators and trade sizes are for identification purposes only and are not actual dimensions. | |
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