XHHW-2 dimensions
Nominal calculation, not one manufacturer's datasheet. The conductor is NEC Chapter 9 Table 8; the insulation and nylon walls are the nominal values the makers catalogue, because UL 83, UL 44 and UL 854 were not read. A wire of the same name can differ slightly: check its datasheet before you specify or order.
Each row is one XHHW-2 size in copper at 600 V: the conductor from NEC Table 8, the walls as the makers catalogue them. Open a row for every layer and its source. What XHHW-2 means, letter by letter.
North American building wire, 600 V (AWG / kcmil) · 24 sizes
| Size | Rating | Insulation mm | Overall diameter mm | Weight (approximate) kg/km |
|---|---|---|---|---|
| 14 AWG | 600 V | 0.76 | 3.3 | 20 |
| 12 AWG | 600 V | 0.76 | 3.8 | 40 |
| 10 AWG | 600 V | 0.76 | 4.4 | 60 |
| 8 AWG | 600 V | 1.14 | 5.9 | 90 |
| 6 AWG | 600 V | 1.14 | 6.8 | 140 |
| 4 AWG | 600 V | 1.14 | 8.0 | 210 |
| 3 AWG | 600 V | 1.14 | 8.7 | 270 |
| 2 AWG | 600 V | 1.14 | 9.5 | 330 |
| 1 AWG | 600 V | 1.40 | 11.0 | 420 |
| 1/0 AWG | 600 V | 1.40 | 12.0 | 530 |
| 2/0 AWG | 600 V | 1.40 | 13.1 | 660 |
| 3/0 AWG | 600 V | 1.40 | 14.4 | 820 |
| 4/0 AWG | 600 V | 1.40 | 15.8 | 1,030 |
| 250 kcmil | 600 V | 1.65 | 17.5 | 1,230 |
| 300 kcmil | 600 V | 1.65 | 18.8 | 1,460 |
| 350 kcmil | 600 V | 1.65 | 20.1 | 1,690 |
| 400 kcmil | 600 V | 1.65 | 21.2 | 1,930 |
| 500 kcmil | 600 V | 1.65 | 23.3 | 2,400 |
| 600 kcmil | 600 V | 2.03 | 26.1 | 2,900 |
| 700 kcmil | 600 V | 2.03 | 27.8 | 3,370 |
| 750 kcmil | 600 V | 2.03 | 28.7 | 3,600 |
| 800 kcmil | 600 V | 2.03 | 29.5 | 3,830 |
| 900 kcmil | 600 V | 2.03 | 31.0 | 4,310 |
| 1000 kcmil | 600 V | 2.03 | 32.4 | 4,780 |