可以去卖一本《电气材料手册》。 以下仅供参考: 450/750V YC重型橡套软电缆 截 面mm2 导体单线最大直径mm 绝缘厚度mm 护套厚度mm 最大外径mm 3×2.5+1×1.5 0.26/0.26 0.9/0.8 2.0 15.2 3×4+1×2.5 0.31/0.26 1.0/0.9 2.0 17.4 3×6+1×4 0.31/0.31 1.0/1.0 2.2 19.4 3×10+1×6 0.41/0.31 1.2/1.0 3.0 24.6 3×16+1×6 0.41/0.31 1.2/1.0 3.5 28.3 3×25+1×10 0.41/0.41 1.4/1.2 4.0 34.4 3×35+1×10 0.41/0.41 1.4/1.2 4.0 37.3 3×50+1×16 0.41/0.41 1.6/1.2 5.0 44.7 3×70+1×25 0.51/0.41 1.6/1.4 5.0 49.8 3×95+1×35 0.51/0.41 1.8/1.4 5.0 55.1 3×120+1×35 0.51/0.41 1.8/1.4 5.0 58.8 3×150+1×50 0.51/0.41 2.0/1.6 5.0 64.5