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Rating | 90 deg C, 600 Vac, FT2 flame, 60 or 75 deg C Wet. |
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Conductor | 0.75 sq mm to 25 sq mm, stranded. Otherwise the same as required for Types ST. |
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Insulation | Extruded PVC. Same as for Type ST. R/C QMTT2 compounds suitable for at least Type TW or THW, or see Facing page. Thickness as noted below: |
| Conductor size (sq mm) | Min Avg (mils) | Min at any point (mils) |
| 0.75-1.00 | 30 | 27 |
| 1.01-6.00 | 45 | 40 |
| 6.01-25.00 | 60 | 54 |
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Assembly | Two or more conductors. Same as for Type STW. Mixed sizes may be employed. |
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Jacket | Extruded PVC. Same as for Type STW. Thickness as noted below: |
| Dia of cable under jacket (inches) | Min Avg (mils) | Min at any point (mils) |
| 0.500 or less | 80 | 64 |
| 0.501-0.750 | 95 | 76 |
| 0.751-1.000 | 110 | 88 |
| 1.001-1.500 | 125 | 100 |
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Standard | Appliance Wiring Material UL 758. |
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Marking | General. |
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Use | External interconnection of appliances and electronic equipment outdoor and in wet locations. |
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