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建筑电线

NM-B

用于住宅干燥场所布线的非金属护套电缆。

美国
规格、结构与电气数据
NM-B / 技术数据

规格、结构与电气数据

尺寸与电气参考 · 铜 · 600 V

导体材料
铜(Cu)
绝缘材料
PVC + nylon
额定电压
600 V
最高导体温度
90°C
护套/铠装材料
PVC
载流量依据
2023 NEC Table 310.16; applicable correction and termination rules apply
尺寸与电气参考 · 铜 · 600 V
配置每芯标称截面积mm²导体规格AWG / kcmil绝缘芯数每芯股数裸导体直径mm绝缘厚度mm绝缘外径mm接地/联结导体No. × AWG外护套厚度mm外形尺寸/外径mm铜重量kg/km电缆近似重量kg/km最小弯曲半径mm25°C导体直流电阻Ω/km75°C交流电阻Ω/km60Hz感抗Ω/km60°C栏参考载流量A选择
14/42.081144实心1.6260.4062.3881 x 140.7628.8993.8142.935.568.63210.7120.1915
14/22.081142实心1.6260.4062.3881 x 140.6359.449x4.4755.189.317.788.63210.7120.1915
14/32.081143实心1.6260.4062.3881 x 140.63512.141x4.4774.412217.788.63210.7120.1915
12/43.309124实心2.0570.4062.8191 x 120.76210.058148.8205.440.645.4536.7680.17720
12/23.309122实心2.0570.4062.8191 x 120.63510.719x4.82687.812820.325.4536.7680.17720
12/33.309123实心2.0570.4062.8191 x 120.63513.31x4.826117.6171.120.325.4536.7680.17720
10/45.261104实心2.5910.5333.6071 x 100.76212.192230.730848.263.4124.2360.16430
10/25.261102实心2.5910.5333.6071 x 100.63512.827x5.537136.918922.863.4124.2360.16430
10/35.261103实心2.5910.5333.6071 x 100.63516.002x5.588183251.522.863.4124.2360.16430
8/38.3668373.6070.7875.1311 x 100.76214.859275.3386.958.422.1422.6570.17140
8/28.3668273.6070.7875.1311 x 100.76215.951x7.061197.9284.227.942.1422.6570.17140
6/313.3026374.5210.7876.0451 x 100.76217.069410.7543.268.581.3481.6730.16755
6/213.3026274.5210.7876.0451 x 100.76217.78x7.976287.2386.933.021.3481.6730.16755
4/321.1514375.7151.0677.7471 x 80.76221.438656.3857.286.360.8461.050.15770
2/333.6312377.1881.0679.221 x 80.76222.53998.61235.288.90.5310.6590.14895

典型应用

室内插座、开关和专用分支回路。

设计特点

绝缘线芯和接地线集合于同一护套。

选型须知

仅限干燥场所。即使导体绝缘为90°C,载流量仍按60°C限制。

需核对的标准

UL 719; NFPA 70 §334

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