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| 線芯長期 允許溫度 ℃ | 短路時允許的溫度，℃ | |||||||||||||
| 銅芯 | 鋁芯 | |||||||||||||
| 230 | 220 | 160 | 150 | 140 | 130 | 120 | 230 | 220 | 160 | 150 | 140 | 130 | 120 | |
| 90 | 129.0 | 125.3 | 95.8 | 89.3 | 62.2 | 74.5 | 64.5 | 83.6 | 81.2 | 62.0 | 57.9 | 53.2 | 48.2 | 41.7 |
| 80 | 134.6 | 131.2 | 103.2 | 97.1 | 90.6 | 83.4 | 75.2 | 87.2 | 85.0 | 66.9 | 62.9 | 58.7 | 54.0 | 48.7 |
| 75 | 137.5 | 133.6 | 106.7 | 100.8 | 94.7 | 87.7 | 80.1 | 89.1 | 86.6 | 69.1 | 65.3 | 61.4 | 56.8 | 51.9 |
| 70 | 140.0 | 136.5 | 110.2 | 104.6 | 98.8 | 92.0 | 84.5 | 90.7 | 88.5 | 71.5 | 67.8 | 64.0 | 59.6 | 54.7 |
| 65 | 142.4 | 139.2 | 113.8 | 108.2 | 102.5 | 96.2 | 89.1 | 92.3 | 90.3 | 73.7 | 70.1 | 66.5 | 62.3 | 57.7 |
| 60 | 145.3 | 141.8 | 117.0 | 111.8 | 106.1 | 100.1 | 93.4 | 94.2 | 91.9 | 75.8 | 72.5 | 68.8 | 65.0 | 60.4 |
| 50 | 150.3 | 147.3 | 123.7 | 118.7 | 113.7 | 108.0 | 101.5 | 97.3 | 95.5 | 80.1 | 77.0 | 73.6 | 70.0 | 65.7 |
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